Brit in U.S., opinion should be immediately discarded. Second, all of your info is probably coming from an echo chamber. Thirdly, I have a couple of gay friends who even admit that frostiest is right. Fourth, you were instantly hostile and reactionary. Obv he hit a fragile nerve.
Finally support for pride has not collapsed. Attendance for parades has increased year on year. Corporations have been more afraid to openly support pride recently due to fear of backlash from the current admin and maga supporters. It has nothing to do with "lewdness on display"