the whole 'theyfab' thing, and the ways i see that word weaponized against others, absolutely reeks of that explosion of transphobia in the early-mid 2010s in response to the increased visibility of nonbinary people
you know, "how dare you assume my pronouns" "triggered tranny sjw cringe compilation" videos on youtube, "i identify as an attack helicopter" jokes, jordan peterson's unhinged lectures rants in response to bill c-16...
even if this person or group is guilty of the crime you say they are, it is still inexcusable to wilfully and maliciously misgender them
you can address inter-community issues without resorting to flinging slurs and also actively dehumanizing all trans and nonbinary people who were AFAB while also erasing the existence of other marginalized groups within the community
you can't fight transphobia with even more transphobia and you cannot put an end to transphobia by joining forces with the transphobes and transmeds and addining fuel to their fire