"Supports can carry"

"Supports are very broad and thus shouldn't be considered as a whole when talking about the strengths and weaknesses of a few champions in that class"

I prefer this.

is doing well and thus must be doing well because we can group champions together solely by class. - OP

Can I pick none of these too?

"Only pick one??" You need a wide support pool! Not like you always get what you want and you don't get good by just playing ONE champ. And many supports have been nerfed to the point of being useless and do need to be brought back like most of the junglers had been to heavily nerfed.

Have you ever played supp!? Some of the most annoying champions are supports and can totally WREK! . You can't tell me you've never played against one of these guys and they totally wreked yo face.

... you're really too dense to realise that those statements are said by different people?