It's not just that they fight ad blockers now. I used to use an auto skipper for the ads, since I am technically okay with being served the ads (dedicated browser, deletion of cookies) and I consider 20 seconds before a video bearable.
They changed the skip button now so that my skipper stopped working. Guess what, now I'm using a blocker instead since I cannot be bothered to constantly click on the fricking screen to prevent 30 min ads from playing.