Yeah that’s a valid point but it doesn’t take much to rebuild the participation history.
I also think it’s an awful metric for security anyways. Reddit tried that but you can literally buy reddit accounts for pennies and it only reduced the original content flow. The subreddits that had min-karma or account age requirements were always needlesly shitty and discouraging imo.
I would still guess people would rather block it and context switch for those 5-10 seconds or it could be preloaded for every video on the timeline which in turn just hurt Youtube’s ad system. The reality is that adblock people are tech savy minority and it’s not worth bending the whole ad pipeline out of shape just for that.
I guess we’ll see how Google handles this but I don’t think they can pull it off tbh.