It’s sent out in waves.

First escalation, you just a warning with an “X” that you can close.

Second escalation, you will be the same warning but without the “X”. You can of course just block the element.

Third escalation, you get the “3 videos” message. After this, YouTube no longer serves you videos. You can get around this by logging out and using incognito mode on Firefox. There are other ways too if you go browse some ublock origin communities.

This is the old Giant Bomb and GameSpot archive that Fandom (who bought both sites) wanted to throw away.

Jeff Gertsmann talks about it in episode 57 of his podcast saying he’s relieved Danny saved it and tells a few stories about how people tried to throw it away in the past.