With the whole customer support services centralized exchange provides, is it all of them that do respond to all issues, I have seen many people complain how these people treat them and ignore their messages when they send any, there are some people that has had issues unresolved for months, which few exchanges that are reputable are the ones giving attention to their customers, so why should one really be crazy over this, the only issue most people do have is either their money get hung over the air, or they get hacked which I think you may not have any of these issues in a DEX exchange, CEX might be popular now, but DEX is really the best.
But, DEX exchange also has dangerous of hack, like phising hack.
For example , Traders can get trapped on the phising web of DEX. They input the private key, then they lost all assets.