@dabuzz: I was wrong ultimately about it still working, eventually youtube will give you a notice saying "Video player will be blocked after 3 videos". This really needs to be updated to be not detected to be useful

It works but it is detected by youtube now and youtube will sometimes display a notice saying "It looks like you are using an adblocker, adblockers are not allowed on youtube". You can still watch videos without ads if you click past it though.