Yes, you are absolutely right! Centralized exchanges are not to be trusted blindly. Anytime you can get compromised or scammed! Though Binance SAFU protected users balance but still binance is not a safe exchange, nor any other centralized! Don't store your coins on a centralized exchange, buy a hardware wallet for it!
I am seeing many threads against BCNEX, I hope everyone can get their withdrawal and get out from this shit exchange!