I had neutral opinion of Delteria, and then I got to experience the joys of its staff/player attitude. Now I can't stand the server just out extension of those experiences, and avoid any topic about it like the plague.
Other than that, you'll get it because of bias/fanboyism. It's going to happen regardless of logic or reason. Same way you have people who hate on different games/consoles, you're going to have the same thing here.
It's a pity, because it's the sort of thing that happened way back when making your own server was a new thing. Then it dwindled away and servers started to respect each other, especially staff/devs, and it led to people being generally more helpful. People went from being selfish and caring only about their server to generally caring about Graal as a whole, and wanting better of it... but with the introduction iOS servers(and now Facebook and Android), it seems to have gone full circle and everyone being angry/ultra-competitive.