Communities. You're right, these will do wonders for engagement, I believe.
I also find it a bit disappointing when I talk about code I'm working on and there's no engagement.
Communities will solve this problem of account based following. So a person can follow code related ideas without flooding their feed with other things I might post. So I can post my code ideas in a community where I know people will appreciate and engage, and I will post my thoughts on crypto in a community that's discussing that.
Interest based "following" and not account based following is the way to go.