The addon does what it claims, however, at some point it started to have a huge problem - it only works once. If a load the YT page, and then it dets discarded, on subsequent view the addon never activates on it, no matter what I do. I can reload the page or even de-activate and re-activate the addon - it doesn't help, it won't load on the same address ever again.

Also tried rolling back to a much earlier version - while this problem seems to not happen as much, then addon stops blocking ads, which is an equally bad problem...