How do these comments "feel" AI written? This post in particular looks like something I would have written myself.

It doesn't appear AI written to me. Neither does the other post you commented on. Of course, I could be wrong, but it's not nice to just accuse people of having AI written comments, especially when it's not completely obvious that's the case.

Protip: replace "I feel like" with "I think". It forces you to ask yourself why you think the way you do. This shift in speech helped me. I'm sure it will do the same for you.