Personally, I think jibes about footballers or coaching staff are par the course and perfectly reasonable, so long as they don’t cross a line or tag in the person involved. I don’t think a Kes reference for Jimmy Dean’s coaching ability is too personal for it to cross a line, nor was Jimmy Dean tagged into it, so it’s ok.
People make mockeries of many people for various reasons, including politicians, egotistical celebs and talking heads. I don’t see what’s wrong with that, but making such comments to their face or in an online message is another matter. Such comments on here aren’t intended to be directed straight at the players or coaches, so they aren’t harassment. They would be if Jimmy Dean was being tagged into them all the time.