I find gatekeeping in the hacker world to be some of the worst in tech.
There's a strong "if you can't figure it out on your own you're too stupid to help" vibe to it, while the rest of the dev world has actually made some decent strides toward valuing inclusion and education.
I find that this is largely the American hacker community - European hackers, and especially Germans, tend to be incredibly supportive of people with the drive to learn. They also tend to expand their hacker mindset to things other than computers - wherever there's a complex system, they're critical of it, enjoy learning how it works, learning how to break it and bend it.
There's a strong "if you can't figure it out on your own you're too stupid to help" vibe to it, while the rest of the dev world has actually made some decent strides toward valuing inclusion and education.