There's a bit of a Naked Emperor situation going on right now. Since Chinese manufacturers can make passable proxies (counterfeits), most people don't notice them from across the table and under two sleeves. Among people who do notice, most of them don't care. Among people who do notice and care, there's still a bit of nervousness about the whole thing because they know that if everyone using (knowingly or unknowingly, e.g. because they were sold one) proxies got called out, they'd be afraid of the number of people who'd be disqualified and it would undermine a lot of faith in the secondary market.

The truth of the matter is, a lot more people are playing counterfeits at tournaments than everyone'd be ready to admit. Hell, a pro player got disqualified recently for playing with one, despite pros getting their cards from sponsors.