I'm curious how you imagine that LGBT people are seeking your acceptance, or pushing their culture on you. Because I'm not seeing this happening, anywhere.
In Chicago, the Irish people have a parade every year, and the Italians and the polish and the Germans each have their parades and festivals every year. Mexicans and Puerto Ricans, too. And I've never seen the Irish, Italians, Poles, Germans, Mexicans or Puerto Ricans being accused of seeking anyone's approval, or of pushing their culture on everyone else. It was always assumed by everyone else that they were just celebrating their own heritage. So I can't think of any reason why we should not assume that the gay pride parade has any different motive than all these others.
And apart from the parade, LGBT social actions have been entirely related to enforcing equal rights that should be guaranteed to them by the Constitution and the courts. Which was never about seeking anyone's approval or pushing their culture on others, it was simply about being treated fairly and equally.
So I don't see how or where you're experiencing this need on the part of LGBTs for your validation, or this alternate lifestyle promotion. I honestly don't.
but those ethnic and other "festivals" do not have naked people and gender twisting morons spanking each other in dog costumes with their butts in the air - naked butts - take that stuff to a banquet hall or a convention center, anyplace with a modicum of privacy