LGBTs are mentally ill, and a percentage of them actively try to spread their mental illness.

This is true.

No amount of LGBT propaganda is going to make a straight dude want to suck dick or take it up the ass.

Also true. Their propaganda aims at the weakening or destruction of heterosexuality as the norm and by extension the nuclear family. They call it "subverting heteronormativity." They're getting straight white soyboy cuckolds and their hyper-sexual mates to support all manner of exhibitionism and sexual kink and persecute critics of the LGBT agenda. It's what so-called "drag queen story hour" is all about.