Polo is a U.S. exchange, they need to comply with U.S. law. It sucks that it happened so quickly, but I'd rather there be an exchange than none at all. I believe decentralized exchanges are coming, and when they do so people will be able to trade freely and anonymously.
From a longer term investment point of view, the sooner they comply and be the biggest xmr exchange that is regulated by U.S. law, the sooner we can expect that kind of market liquidity only bitcoin can dream of, for now.
We are stuck in the short term - and no p2p exchanges in this miserable presence.