I comment way more on non-programming topics because that's where I think I can contribute - most people on here are better programmers than I am but I have life experiences that are fairly unusual for this particular bubble. I do read the technical posts but I don't have much to say.
As for the 'somehow', I was raised by hackers and I used to be one - I'm too much of a generalist to fully commit to it but I'm 'culturally' a hacker/hacker adjacent. I imagine our ranks are growing for various reasons, which might explain some of the shift.