diff --git a/yt_dlp/extractor/common.py b/yt_dlp/extractor/common.py
index a2970d0774..1c36f412d5 100644
--- a/yt_dlp/extractor/common.py
+++ b/yt_dlp/extractor/common.py
@@ -1527,11 +1527,11 @@ def _rta_search(html):
             r'>\s*(?:18\s+U(?:\.S\.C\.|SC)\s+)?(?:§+\s*)?2257\b',
         ]
 
-        age_limit = 0
+        age_limit = None
         for marker in AGE_LIMIT_MARKERS:
             mobj = re.search(marker, html)
             if mobj:
-                age_limit = max(age_limit, int(traverse_obj(mobj, 1, default=18)))
+                age_limit = max(age_limit or 0, int(traverse_obj(mobj, 1, default=18)))
         return age_limit
 
     def _media_rating_search(self, html):
diff --git a/yt_dlp/extractor/generic.py b/yt_dlp/extractor/generic.py
index bc34aafa7a..b3a27f31e8 100644
--- a/yt_dlp/extractor/generic.py
+++ b/yt_dlp/extractor/generic.py
@@ -121,7 +121,6 @@ class GenericIE(InfoExtractor):
             'id': 'cauky-lidi-70-dil-babis-predstavil-pohadky-prymulanek-nebo-andrejovy-nove-saty-ac867',
             'ext': 'mp4',
             'title': 'čauky lidi 70 finall',
-            'age_limit': 0,
             'description': 'md5:47b2673a5b76780d9d329783e1fbf5aa',
             'direct': True,
             'duration': 318.0,
@@ -244,7 +243,6 @@ class GenericIE(InfoExtractor):
             'id': 'paris-d-moll',
             'ext': 'mp4',
             'title': 'Paris d-moll',
-            'age_limit': 0,
             'description': 'md5:319e37ea5542293db37e1e13072fe330',
             'thumbnail': r're:https?://www\.filmarkivet\.se/wp-content/uploads/.+\.jpg',
         },
@@ -255,7 +253,6 @@ class GenericIE(InfoExtractor):
         'info_dict': {
             'id': '60413035',
             'title': 'Etter ett års planlegging, klaffet endelig alt: - Jeg måtte ta en liten dans',
-            'age_limit': 0,
             'description': 'md5:bbb4e12e42e78609a74fd421b93b1239',
             'thumbnail': r're:https?://www\.dagbladet\.no/images/.+',
         },
@@ -267,7 +264,6 @@ class GenericIE(InfoExtractor):
         'info_dict': {
             'id': 'single_clip',
             'title': 'Single Clip player examples',
-            'age_limit': 0,
         },
         'playlist_count': 3,
     }, {
@@ -324,7 +320,6 @@ class GenericIE(InfoExtractor):
             'id': 'videos-1',
             'ext': 'mp4',
             'title': 'Videos & Audio - King Machine (1)',
-            'age_limit': 0,
             'description': 'Browse King Machine videos & audio for sweet media. Your eyes will thank you.',
             'thumbnail': r're:https?://media\.indiedb\.com/cache/images/.+\.jpg',
             '_old_archive_ids': ['generic videos'],
@@ -363,7 +358,6 @@ class GenericIE(InfoExtractor):
             'id': '21217',
             'ext': 'mp4',
             'title': '40 ночей (2016) - BogMedia.org',
-            'age_limit': 0,
             'description': 'md5:4e6d7d622636eb7948275432eb256dc3',
             'display_id': '40-nochey-2016',
             'thumbnail': r're:https?://bogmedia\.org/contents/videos_screenshots/.+\.jpg',
@@ -378,7 +372,6 @@ class GenericIE(InfoExtractor):
             'id': '18485',
             'ext': 'mp4',
             'title': 'Клип: Ленинград - ЗОЖ скачать, смотреть онлайн | Youix.com',
-            'age_limit': 0,
             'display_id': 'leningrad-zoj',
             'thumbnail': r're:https?://youix\.com/contents/videos_screenshots/.+\.jpg',
         },
@@ -419,7 +412,6 @@ class GenericIE(InfoExtractor):
             'id': '105',
             'ext': 'mp4',
             'title': 'Kelis - 4th Of July / Embed Player',
-            'age_limit': 0,
             'display_id': 'kelis-4th-of-july',
             'thumbnail': r're:https?://www\.kvs-demo\.com/contents/videos_screenshots/.+\.jpg',
         },
@@ -430,9 +422,8 @@ class GenericIE(InfoExtractor):
         'info_dict': {
             'id': 'beltzlaw-1',
             'ext': 'mp4',
-            'title': 'Beltz Law Group | Dallas Traffic Ticket, Accident & Criminal Attorney  (1)',
-            'age_limit': 0,
-            'description': 'md5:5bdf23fcb76801dc3b31e74cabf82147',
+            'title': str,
+            'description': str,
             'thumbnail': r're:https?://beltzlaw\.com/wp-content/uploads/.+\.jpg',
             'timestamp': int,  # varies
             'upload_date': str,
@@ -447,7 +438,6 @@ class GenericIE(InfoExtractor):
             'id': 'cine-1',
             'ext': 'webm',
             'title': 'CINE.AR (1)',
-            'age_limit': 0,
             'description': 'md5:a4e58f9e2291c940e485f34251898c4a',
             'thumbnail': r're:https?://cine\.ar/img/.+\.png',
             '_old_archive_ids': ['generic cine'],
@@ -461,7 +451,6 @@ class GenericIE(InfoExtractor):
             'id': 'ipy2AcGL',
             'ext': 'mp4',
             'title': 'Hoe een bladvlo dit verwoestende Japanse onkruid moet vernietigen',
-            'age_limit': 0,
             'description': 'md5:6a9d644bab0dc2dc06849c2505d8383d',
             'duration': 111.0,
             'thumbnail': r're:https?://images\.nu\.nl/.+\.jpg',
@@ -477,7 +466,6 @@ class GenericIE(InfoExtractor):
             'id': 'porsche-911-gt3-rs-rij-impressie-2',
             'ext': 'mp4',
             'title': 'Test: Porsche 911 GT3 RS - AutoWeek',
-            'age_limit': 0,
             'description': 'md5:a17b5bd84288448d8f11b838505718fc',
             'direct': True,
             'thumbnail': r're:https?://images\.autoweek\.nl/.+',
@@ -493,7 +481,6 @@ class GenericIE(InfoExtractor):
             'id': 'k6gl2kt2eq',
             'ext': 'mp4',
             'title': 'Breezy HR\'s ATS helps you find & hire employees sooner',
-            'age_limit': 0,
             'average_rating': 4.5,
             'description': 'md5:eee75fdd3044c538003f3be327ba01e1',
             'duration': 60.1,
@@ -509,7 +496,6 @@ class GenericIE(InfoExtractor):
             'id': 'videojs_hls_test',
             'ext': 'mp4',
             'title': 'video',
-            'age_limit': 0,
             'duration': 1800,
         },
         'params': {'skip_download': 'm3u8'},