Can confirm things like this are happening. Youtube embeds on social media websites occasionally stop working entirely unless I disable adblock. They'll either sit on a black screen forever or just straight up dump me out to a "Something went wrong" error in the embed frame.
On Youtube itself, where I now have adblock turned off (since I'm on my cousin's Youtube Premium family plan), Youtube is demanding I disable Firefox's tracking cookie blocker before it'll let me manage my playlists.
The ridiculous part of that being it never needed cookie access before last month, and it only does this when I try to edit playlists directly. Using any other playlist editor (like the one that pops up from the three dots next to a video thumbnail) still works just fine.
This could get bloody fast.
