If you did not write "Mika" or "MFC" you could have been describing any fanbase in the entire world
It's not just Mika that obsessive, irrational behaviour is linked to - it's all celebrities. Even the celebrities that you think would not have a crazy, crying stalker, yep, they've got them.
Of course this does not deflect away from the artist nor does it put all their fans in the one box. Some people, I remember by their stories, managed to behave in a mature, rational way by waiting for their special time, not bothering him. Unfortunately, they were a minority at that particular party