When you start using things like fat it becomes much more personal and vindictive, so yes, will cut deeper. In the same way if you call a black person a black cunt it's much worse than just calling a cunt that happens to be black. If you have no idea what i'm talking about then you've never been bullied.
The term cunt on here is largely desensitised here anyway. I'm not a pearl clutching puritan by any means. I'm sure i've called all sorts of people like refs and gooners, cunts. They might end up seeing it, however it's unlikely. However this is a man who is part of our club and trying - despite what some people think - to bring us sucess with the style of football that all us wanted. It's not just hyperbole on a forum, people are now screaming it to his face from the stands.
Even if you're so emotionally broken you can't see why screaming at someone trying to their job that they're a fat cunt is wrong, then at least try and understand that abusing him, or any of our players, isn't going to improve the results.