Yes, Pride really really is the opposite of shame. Queer people all over the world understand that explicitly. That’s why it’s called Pride.
Do you really think that we named it after selfishness? Dude, that’s ridiculous. Of course the sense of pride in Pride festivals is “the opposite of shame.” We queer understands that to the very core of our beings.
Your definition is idiosyncratic and nothing like what any of us mean when we talk about LGBTQ Pride. You don’t need to tell us not to be selfish. We get it. You’re beating a straw man.