Though, maybe it's just me, but it seems like this general negative factor might the case with a LOT of things. Like, I've often heard from digital artists that the digital art community can be like this too, with the "main" part of it being generally mean and nasty. Heard that about a lot of different subjects/topics/hobbies.
Whether that's actually true or not, I cannot be sure, as those are outside of my own interest range so I havent seen it for myself.
You've addressed a very real problem here, with a lot of hobby/interest communities. I hope you don't mind this being a bit of a rant because I have a bone to pick with most special interest communities because of this, whether it's fandom, entertainment, hobbies, activities, etc.
The online art community as a whole is very mean and nasty and there's a lot of gatekeeping, and people thinking they're the authority on what is art and what isn't art based on skill level and experience. So I don't post my art online at all and I even get terrified of posting it on here, after being ripped apart by other artists on art forums.
Yes, I am a "hobby" artist, and I am still learning and tweaking my skills, and no, I will not improve if people just shoot me down every time I make something. That makes me want to retreat into my shell and never make art again. No one learns or improves without practice and no one should expect anybody to be a prodigy the first couple of times they pick up a paintbrush.
Art and photography are things I generally don't feel "safe" posting. Even on here, for the most part. There is a difference between polite constructive criticism, and mean-spirited criticism and tearing people down. And most of the time I'm not even looking for a critique, or someone to tell me if my art is good or bad, I'm just looking to share a special interest and maybe something I'm proud of. I don't need someone to give me a bunch of reasons to NOT be proud of it.
I also hate conflict, and will try to dodge conflict at all costs, in case that wasn't obvious on here...
I'm even afraid to post videos of myself playing instruments because I feel like people will laugh at me or tell me I'm terrible at it.
People can't keep their opinions to themselves about literally ANYTHING anymore and that's why I don't talk about most of my special interests besides dogs, because that's the only one where I'm 100% confident in my skill level.
There are still a lot of people in the dog community that are mean, competitive, judgmental, political, and jealous, though. You will find people like that in literally any interest-related community... there is always someone who thinks they're better than everyone, and that they're the godly authority on the whole subject and think they have the right to tell other people that they're crap and don't belong in the community...
People need to realize that we're all just people trying to get through our day, and some of us are just trying to share things we enjoy...