The other thing about the word “queer” is that almost everyone I’ve seen opposed to it have been cis, binary gays and lesbians. Not wanting it applied to yourself is fine, but I think people underestimate the appeal of vague, inclusive terminology when they already have language to easily and non-invasively describe themselves.
Saying “I’m gay/lesbian/bi” is pretty simple. Just about everyone knows what you mean, and you quickly establish yourself as a member of a community. Saying “I’m a trans nonbinary bi woman who’s celibate due to dysphoria and possibly on the ace spectrum”… not so much. You’re lucky to find anyone who understands even half of that, and explaining it requires revealing a ton of personal information. The appeal of “queer” is being able to identify yourself without profiling yourself. It’s welcoming and functional terminology to those who do not have the luxury of simplified language and occupy complicated identities. *That’s* why people use it - there are currently not alternatives to express the same sentiment.
It’s not people “oppressing themselves” or naively and irresponsibly using a word with loaded history. It’s easy to dismiss it as bad or unnecessary if you already have the luxury of language to comfortably describe yourself.