perhaps there is some confusion caused by the fact that I removed the posts in question from this thread. They were 'name calling' which is a personal shot here
you are correct, adding "hey stupid' would make that a personal shot.
But, I can see where you saying someone is content with a mediocre team would be taken personally and therefore bait an inkind response. Just because they are not unhinged does not mean they are happy. That's just you inferring that because they are not as angry as you, they don't really care if the team plays well.
Making insulting assumptions about people causes problems too. Before you assume that they are content with a mediocre team, maybe ask them if they'd like the team to play like this forever. I doubt anyone would answer yes to that......except possibly a fan of another team.