tl;dr: are a weirdo, bigoted in any way.
racist
lgbtqia+ phobic
anti-semetic
xenophobic/islamophobic
ableist
pedophilic/MAP
sexist/misogynistic
entirely nsfw acc
post nsfw/gore without warning
MIK/AAM
zoophile
anti-anti
terfs/swerfs
truscum/transmeds
anti neopronouns and xenogenders
anti self-dx
(neo)nazi
cringe culture supporter
pro-lifers
use slurs you can't reclaim
fetishise mlm/nblm and or wlw/nblw
fujoshi/fundashi
think children can't be lgbtq+, think kink belongs at pride
superstraight, supergay, superbi
sysphobic, pluralphobic
think aroaces, acespec cishets, and/or arospec cishets aren't apart of the community
sexual assault or harassment
pedophilia (even towards fictional characters)
incest (even regarding non-blood related family)
sexualising minors (even in fiction)
large romantic or sexual age gaps (even in fiction)
abusive or unhealthy relationships (even in fiction)