I said "seems" because I never seen it since I use invidious instances, my mother had it though, with ublock origin too.

For each video a count down pop said it would stop working for that account if the adblock wasn't disabled.

I'm logged in to YouTube; I use uBlock Origin; and YouTube has never stopped me from watching videos. I just have to assume that uBlock Origin is blocking ads in a way that YouTube either can't detect or can't stop -- a way that other ad-blockers haven't caught onto.

orthzar

It seems to act up only if you're logged in.