Thats insane. I have never been carded for a meta account IRL.
If you live outside of a city in America you will be shocked how many community events are organized and advertised exclusively on Facebook, how many local businesses eschew any online presence aside from a Facebook page, etc. Some towns got into the internet in 2012-2015 and basically got stuck there.
Uh, yes? What kind of functions are you trying to attend? If you go to C3 and show people your Facebook account, you will rightfully be mocked (unless it's an admin account you're not supposed to have).