I’m not sure where you get your data. While homosexuals are welcome to attend many churches, most churches certainly do not accept their behavior, and that of other sins.
Open homosexuals would not be welcome to join membership at most churches. It would go against everything they stand for.
And the waitress may not have gotten a tip, but I assure you, there was no message left on the receipt.
You’d be surprised how PC most churches have become. They accept all sin as their rationale is: we all fall short of the glory of God, so everyone is welcome and accepted in this family of Christ. Once a church I was going to featured a film we watched about a gay pastor who tried to pray the gay away but it didn’t last and we were told to accept everyone as they are. I never went back to that church and have no regrets leaving.