Who exactly doesn't it help though? Gay people? It continues because it helps and appeals to many in the LGBTQ community and maybe that's worth more than appealing to those who aren't already down with the cause. There's this show called the Savage Lovecast hosted by a guy named Dan Savage, an outspoken gay advice guru who is sort of divisive depending on who you talk to but has grown into a dude focused on sex education and LGBTQ support. Just this last October, he received a call from a
young lesbian who called about being abused emotionally by her family after coming out (~32:40). Her parents yelled at her, ignored her, pushed her to get "fixed" by a pastor to become straight. She contemplated suicide, contemplated the hell her parents assured her she'd be cursed to if she continued her life of sin. Basically a personal hell created by her own parents due to the fact that she likes to sleep with women. And Dan's advice was to look for acceptance elsewhere and not seek it from people who obviously weren't interested. Her story is not unfamiliar among people who choose to come out but would you tell her she shouldn't seek that constant reminder of self worth she needs because someone might be turned off by it?
One phrase and they are turned on by people they thought would love them unconditionally. Again this is just last year and her story is just one of many that occur all the time. People stuck and feeling alone who need desperately to hear about their value in a world that denies them value. People can't and shouldn't wait around for love and acceptance from a world that doesn't want them. If a passionate desire to celebrate yourself, find and commune with those like you and remind yourself of your worth you didn't receive from the hetero-normative status quo turns you or anyone else off, that is something you have to work on. The alternative you could only be suggesting is that instead of showing pride and love for themselves, in the way they desire to they should rather not and just...wait quietly until they spontaneously gain acceptance from a world that is still wholly resistant to the basic idea of them. If pride parades, history months and the like have to continue until the end of time, I say let them continue. They help people. They let people know they're not alone. And you haven't acknowledged that prideful displays of self love can also appeal to people outside of that group, not just turn everyone away. Straight people have been and celebrated along side their non-straight non-cis brothers and sisters with as much vigor as anyone else and they are accepted and loved by the community in kind. If any straight person is turned off by grand displays of self love in a world still focused on tearing them down, maybe they weren't worth the effort of appealing to in the first place.