Although I only know and have used just a few number of DEXs here, but I won't fail to say that DEXs is still way behind starting with the prominent issue which is low volume especially when it is compared to centralized exchanges. It is totally true that Decentralized exchanges gives more sense of security but crypto users are willing to trade that security for high volume on centralized exchanges, that is to show how important it is. Therefore in my own understanding, DEXs needs to do more to gain the attention of more users starting with volume and maybe user interface.