What are you basing that on? I lost a ton of followers when they started deleting bot acconts and the steady flow of around 4 new bot followers each day has died down as well. Maybe your experience has been different but if you’re not even on Twitter, I wonder how you would know.
I think that if you add spaces around the keyword it then wont trigger if that word is contained within another word.
Another thing to note is that the post filtering also applies to usernames.