I like ublock origin's UI. Its one of the best extension UI's Ive used. Simple and clear. It's bare bones for power users and I guess that makes it inaccessible, calling it garbage seems like overkill.
It's not clear though. I still have no idea what these columns mean, despite have been actively learning about them multiple times (as in, I have to re-learn every time I need to use them). They don't even have tooltips.
A good UI should be self-explanatory, this is not even close.