Here is a funny little thing from Riot Support. I'm sure I posted this here before.
http://i.imgur.com/bbjKP.jpg
reddit thread: http://www.reddit.com/r/leagueoflegends ... _the_meta/
TL;DR: Riot doesn't specifically say they enforce the meta, but playing against the meta when four other people on your team say no will get you banned. It's called refusing to communicate with your team.
I've already gotten a temp ban for this btw so they aren't messing around lol.
http://i.imgur.com/bbjKP.jpg
reddit thread: http://www.reddit.com/r/leagueoflegends ... _the_meta/
TL;DR: Riot doesn't specifically say they enforce the meta, but playing against the meta when four other people on your team say no will get you banned. It's called refusing to communicate with your team.
I've already gotten a temp ban for this btw so they aren't messing around lol.