haii I don't have a lot of ppl blocked but usually my criteria goes:
1) underage and/or ppl I feel are lying abt their ages (I have a very real fear of this bcs it's happened in the past)
2) ppl that straight up steal twts (not mine specifically, and I'm not talking abt twting similar things coincidentally)
3) ppl that indulge very srsly in engagement-baiting
4) weird fic writing takes i.e. writing discourse (not the fics themselves)
5) ppl that engage in t/b discourse and regularly twt "omg X could never be a t/b". which, I feel is very diff from "omg look at X being such a t/b". I fw anything so the only ick I ever get is w the first example.
6) I also usually block ppl that state "omg block me if you like this thing"
7) ppl that constantly twt w very odd negative connotations (not to me specifically)

I think I only have like under 20 accs blocked and am pretty forgiving for how often ppl appall me so yeah, if you're someone I've blocked I'm so sorry but we are not meant to be in this lifetime🥲🥲