This add-on honestly seemed really great when I started using it, I mean, I really appreciate the customization it gives! I'm only giving it a one-star review because it just slows down Youtube a TON.. I'd gladly use it again if it was optimized though.

I definitely wouldn't recommend this if you intend to not make your Youtube slow.. also if the developers are seeing this, please optimize this add-on, it's the best one I've found for these things, but it just sucks when it comes to speed (also some settings just don't work for me..? not sure why, as I don't have any other add-on).

It slows youtube down a lot.

Doesn't work. I can't save any settings.

Comment filtering does not work. Even if it did work, the settings menu does not open in a new tab so it constantly closes and you have re-open it and navigate to the content filter page to paste the text you want to filter. It is very annoying to add multiple things at a time.

none of the options work on mobile

It doesn't work at all. I don't understand what I'm supposed to do.

Firefox android mobile: requires use of "about: config", which is unavailable on any mobile version (nightly, beta, production)