ybeeds did have a valid point in addressing the comment '(Don't want to bother you with a PM)' by saying that a PM is less of a bother than a post.
He's not complaining that people shouldn't post in threads because obviously he knows he can unfollow it if he wants. He's just saying that the comment '(Don't want to bother you with a PM)' is inaccurate and shows a misunderstanding of the system.
I didn't view it as confrontational, rather just letting the guy know how things work.