Life is too short not to block people who are a consistent problem, though.

I block when somebody is impacting my mental health. It's not common, but it does happen.

Or when they resort to personal appearance insults.

If the only thing somebody is contributing to the conversation is trolling, insulting, and borderline harassment, I block them.

I have only once commented and then blocked, though, and it was on Twitter not Medium, and when it was somebody I thought I respected as a professional colleague called me a terrorist for supporting Black Lives Matter.