People say this more than they should.
"If Cho'Gath is so OP, why aren't you playing him for the freelo???"
"If Caitlyn is so OP, why aren't you playing her for the freelo???"
"If (insert op champion) is so OP, why aren't you playing them/it for the freelo?"
Maybe people are one tricking a certain champion.
Maybe people don't like playing that champion's class.
Maybe people don't like playing the champion.
Saying "HUR DUR IT'S NOT OP CAUSE UR NOT PLAYING IT" is very stupid.
EDIT: Freelo is not "playing that champion to learn it's strengths and weaknesses" freelo is "they are undeniably busted and I will spam them in ranked to try and climb the ladder faster". It is a huge difference.
EDIT2: Yes I am silver 5. I don't play ranked because I cannot stand the environment. My ranking is irrelevant.
EDIT3: My least favorite thing about getting to hot is how many people throw really shitty arguments at your post.