Yeah, I keep seeing this and it's never been my experience in 20+ years of desktop Linux.
Yeah, every now and then there is the asshole and troll. Go to a supermarket and you'll find them too, go to your job and you'll find those too. I don't call all supermarkets asshole conglomerates, it's simply the world, there are asshats in the world.
I've talked directly to main developers of many systems like LVM, PHP, and so on who spent time to help me fix my issues. Who ever got to talk directly to an Apple dev or Microsoft dev?
It's not just Linux, it's like that with all open source. Yes, there are negative players everywhere, but mostly it has been a very welcoming and helpful group