Yep, I currently use Amethyst but I'm not sure if I'll stick with it. I like it but I'm not keen on how it seems to hide certain posts for "blocked words".
Discussion
Personally it has saved me from 99% (wild guess) spam and I'm able to define new words to block automatically so I like it.
But I agree with you that there may be valid content that might have been hidden from me without my knowledge 😱