I agree. And it’s not just you. I’ve noticed that a few posters really dislike each other, and that when one of them posts in one forum something that the other doesn’t like, there will be a challenging comment from the other, and then they are off to an argument. It’s as if the latter poster is stalking the former.
I’ve also noticed attempts at thread control by someone other than a moderator. Kind of akin to the “thread valedictorian” competitions that sometimes take place. The person who starts a thread doesn’t get to dictate the direction the thread takes, and doesn’t get to control whether or not the other posts belong in the thread.