When I used to play MTG one of the LGSs I used to play at had a policy of, "If you play with proxies they much be cleared by the judge first."
Almost everyone with anime proxies got told they couldn't use them due to them almost always being NSFW. The people with sharpied basics almost never got turned down. The anime proxy dudes who got turned down always got pissed when they got told no.
They were pretty good on a lot of things but the regulars who'd show up to games were eventually the reason I stopped going there.
I do miss MTG sometimes but I don't miss the local MTG groups at all.