Sorry to read about such experiences people might have had, but I actually have had the exact opposite experience. I made few submissions/comments about 'dev' things, and because of the support of the HNers, I felt really good and was even more excited to work on them.

First was a firefox plugin, and the first plugin I ever wrote. It basically bans some results from google. https://news.ycombinator.com/item?id=23295989

Second is my current moonshot I'm working on where I was expecting a lot of criticisms and negative comments, especially from programmers/devs in the AI space (Fully AI driven indoor farm, kind of deep mind for agriculture and understanding plants better than any human). But the largely positive feedback of the community was really energizing and uplifting.