I'm getting this too, but... for some reason, only in Incognito? Sometimes it won't load at all or it'll load 19 seconds and then pause. But if I'm logged in on a normal browser it's all good.
Makes me suspicious. Are they trying to farm data off of uBlock users to hammer their accounts later or something? Maybe i'm just paranoid. Still, at least I can still use YouTube I guess. Not that I want to, but I can't afford the extra space I'd need to back up all the music I listen to on there + the videos I used to like and want to keep.