Pretty much. If they'd announce it a bit earlier, heck, I'd even take a 3 day notice rather than no warning at all. If they did put up a notice and if I was a user of the exchange, I would just sigh, withdraw the funds, and probably move on to another exchange. Knowing in my mind that the exchange itself had no choice either but to put up KYC requirements. But then again, chances are that they're simply just very unprofessional, or the more shadier reason- they did it on purpose for their users to actually be forced to submit KYC to have access to their funds.