Lemmy is a free open source software project. People into FOSS like the idea of something being built by a community to the benefit of everyone and not controlled by any one person or company who could seek to benfit only themselves. It makes sense that their political ideology mirrors that.
FOSS and just programming and tech in general have an unusually large number of trans people. I'm going to be honest, I'm not exactly sure why. I can only assume because programmers are judged based on their code and not their appearance.
Tech doesn’t really self select for well balanced, socially confident, neurologically normal folks.
I’m sure those people are in tech and have success as well, but the stereotype of the “hacker nerd” didn’t spring out of nothing. The obsessiveness and desire to be right and know everything that make IT geniuses can also make those same folks really, really hard to be around.
People that are ostracized for their socially aberrant behavior usually (not always!) have sympathy for other outcast groups, whatever the reason.
And you’re right, too - writing code is sort of one of those ultimate bullshit tests - either it works, or it doesn’t. Computers don’t care about your pedigree or your appearance or even your personality. Nice guys who write shit code might have management or product team in their future, but they don’t usually write code for very long. But good devs are hard to find, so even the most straight laced companies are willing to bend a bit when it comes to talented developers.