Celebs are 'fair game' for people to comment on their weight, rather than their talent/lack of talent? But why? 
I know what I mean in my head and I have trouble wording this but I'll try...
There are so many people on MN who would rightly get upset if someone else commented negatively on their weight/appearance.
They would almost definitely have plenty of posters saying, "Well that says more about the rude fucker than it does about you. Forget them, they're not worth worrying about. Are they absolutely perfect themselves?" etc....
Yet, a lot of those same posters will have no trouble unleashing their judgemental venom about the weight/appearance of celebrities.
So their words ring totally fake and hollow.
It's either fine to comment negatively on someone else's weight or it isn't.
What that person does for a living, doesn't make it suddenly OK to do so.
A common excuse on MN seems to be "Oh but they're a role model, so we have a right to comment on their weight".
Well in my opinion role models start at home. So if you're overweight/underweight as a parent and you can't seem to get that under control for the sake of your own children, you have no right to expect a complete stranger to do so.
Anyone who judges another person for their weight/appearance but thinks they shouldn't be judged themselves, is a total hypocrite imo.
Just stop the body shaming ffs.