This is a good start. Still, people are lazy and on a centralized exchange, they can withdraw to the bank or use a credit card to buy, which is the entry point for every new cryptocurrencies enthusiast.

Decentralized exchanges are rather for people who already hold some cryptocurrencies in their portfolio. One can't start his crypto journey on a decentralized exchange because there is no other way to buy crypto as only with crypto. Anyways one has to start from Coinbase or Localbitcoins to buy first BTC.

Still, don't understand such low volumes on these exchanges mentioned above, especially if they offer stablecoins pairs. BTC is already 10 years old and there are many people holding it and other cryptocurrencies if only a small percentage will use Deex or P2P exchanges this should be enough for much higher volumes.

As I said before, a phenomenon which is hard to grasp. We all want to be anonymous when trading BTC or even gambling and nobody is happy when there is a need to do KYC, but still, the majority choose centralized exchanges not only to trade but to hold crypto in their wallets, even after so many hacks (not your keys not your money).