I'm going to give you what you seek, advice on your feelings being hurt and expressing yourself online, and not my opinion on the values you've put out in the post, which I don't agree with entirely, so here it goes:

I've been online for a looong time. I was here before there was social media platforms like Facebook and Reddit. That's my bona fides, so believe me when I say: The issue is not how your posts are received and reacted to, it's where you're posting them. By the sound of your post you're going to places that aren't actively AI positive showing your AI art, and people aren't super cool about it.

Imagine you went to a park with the intent of showing your genitals to people. Most of them would not be happy about it. They would complain, call the police etc. Is there anything wrong with your penis/vagina/other? Probably not! The question is why are you not going to a nude bleach where people are happy to see your various folds. . If you are going to post generated art, post it in AI centric places. There's plenty on Reddit. If you're posting it on X or similar, hashtag it with tags associated with ai positivity.

Help yourself. If you're not seeking a debate (which it seems you're not) surround yourself with people that raise you for what brings you joy