I haven't seen a single "decentralized exchange" yet. All of them run on altcoins, which to begin with, it's risky to assume that they have any levels of decentralization enough to survive the attack of an entity of global attacker status, or even worse, smaller entities in coordination with enough horsepower to f*ck you up.
Once again, this McAfeeDex thing is "backed by the Ethereum blockchain". Did people forget about this?
I wouldn't trust any of this. If authorities wanted, I would bet they can end those "decentralized" exchanges.
A true decentralized exchange cannot be shutdown by authorities. I mentioned
one, maybe there are more, i don't know. To use that one, you become a node for the time you are using it, that node runs in the Tor network, not the clear internet, so you cannot be identified unless you yourself want to reveal personal info, which is a problem when it involves fiat.
True DEX is like Bitcoin, decentralized, p2p. Most "DEX" simply let you bring your own wallet instead of being forced to use theirs, which is why they are not truly decentralized as they claim.
It is also technically possible to exchange some coins directly, ie. Bitcoin with Litecoin, directly within wallets, after they both adopted segwit. This i have yet to see in practice, but its theoretically possible, just needs wallet support. So intermediaries like McAfee wouldn't be needed at all.
