This has nothing to do with insolvency oda, take your strawmans elsewhere. Telling people they're verified and letting them trade/deposit just fine, not mentioning any sort of anal probes about source of Bitcoins in TOS, and then having it come as a surprise when withdrawing is inacceptable. No real broker will do this.
Go through the last 3 or 4 pages of this thread. Count how often someone asks "does this mean I should be worried about my deposits"? (by my count, around 4 or 5 times).
I will stop building strawmen when you guys stop using the rhetoric reserved for a "danger! get your money out!" situation, where in reality you should be using your "that's against my principles, and all that btc stands for" rhetoric.