I've been testing this extension for a week or two and came to the conclusion:
It's simply not worth it. It slows down youtube too much, even without thumbnails on, it has many graphical bugs the author doesn't fix and it causes many buggy reloads making the UI glitch out, just for it to only work on videos that already have a million views. Even for free, I wouldn't recommend it.
Hi, sorry for wording my response overly emotional.
The bugs and glitches:
- Duplicate edit and logo buttons.
- Flickering channel banners when trying to view all videos
- Video recommendation sidebar changing position due to frequently changing titles
- Longer page building times due to frequent rerendering and injecting attempts (probably causes mulitple edit buttons)
- Probably more
Basically, it makes youtube feel overall sluggish and breaks the UI frequently. This tool is too aggressive trying to inject new titles and thumbnails.