I used NoScript heavily for years. No ads on Youtube all that time. A couple of months ago something went wrong and I started seeing ads again (wow, that was literally a headache for me). No matter how I configured No Script, I still wasn't able to get rid of the ads. After trying uBlock - because a lot of people here recommended it - it works fine again.
I use ublock, and now somehow now have double the ads in Youtube (the ads auto play, but the actual video does not, and then clicking play on the video triggers a second cycle of ads).
I havent yet figured out what changed in my ublock to cause it.