Gay people have just as much right to make stuff up, as straight people. Xtianity is based on picking and choosing whatever made up, or borrowed, evidence you want. No reason gay people can't decide their version of xtian doctrine is the right one, and the rest of xtians are wrong. Its literally what every sect does.

Religion is all about self hate with enough narcissism in it to justify your existance. You're a worthless, filthy piece of crap tainted by sin from birth, nothing you can do about it - but god loves you and look at everything he'll do for you, you worthless little flawed creature that god adores so much.

The sin isn't the issue - being gay is just one of many, many sins/flaws that a person struggles with to be worthy of that piece of shit god's eternal love.