just noticed i said you alot, this is in general and not directed at anyone
this seems like this a problem with pompous bars imposing dress code to "keep out the riffraff" or something, and the bouncer maybe abusing that a little bit.
hate to break it but this is a cancer on the "straight" scene aswell…
sorry but i don't want to wear uncomfortable "smart"/"semiprofessional" clothes to dance in a sweaty pit.
if a place has a dress code, please do not give it your patronage... do you really want to be in this pretentious place anyway?
also hate to break it, but as a private enterprise and not a universal communally owned "queer space", the owner is free to impose whatever restrictions they want bigoted or not. you can also boycott this, and try and convince others of the same, if you really care.
as for the gentrification or normalisation of queer culture... well... honestly i don't identify with this and that the perpetuation of the notion of some universal queer culture is inherently damaging to the individuals in the group. the image of gays portrayed in popular media is a disgustingly shallow and laughable caricature. Not that "being weird" (all in different ways) is enough to bind any group together. I mean, straight people aren't all a universal homogeneous community bound by the fact that they all like the opposite sex?
i am who i am; the fact that i like dick has nothing to do with my identity, personality, interests or mannerisms. this also means just because someone is gay or runs a gay bar, doesn't mean they identify with or even like drag queens and so on, it's an error to assume so…
besides, if enough of the group in question are excluded from said venues: there will be a large enough group to split off and populate their own venue. if they don't want you there; probably you don't want to be there either. I mean, you don't find heavy metal moshers in a "basic" club, do you. It's the same thing.
some of the best nights out, with the friendliest and most fabulous people have included those going out in a bathroom robe... or even a onesie (barf); and they can go to those places because there isn't a judgement on them. And they aren't even explicit LGBT events, but have plenty of gay/trans etc folk there because of the accepting environment.
accepting in general, from your washed out 50 year old smelly hippies, chavs, goths, queens… not just of LGBT or any specific group. All that matters is those at the venue don't harass others or cause trouble.
TLDR: venues policing dress code sucks in general and is nothing inherently to do with LGBT. many bouncers are dicks and will use any excuse to refuse entry "are those trainers?". assumption that LGBWTFBBQIA+ is a single unified group with a shared culture is inherently damaging to the individuals in that group.