That is, in my perspective, one of the main challenges of Web3 adoption among traditional users who are very picky regarding convenient and user-friendly interfaces. Many blockchain apps are written by very creative people, mostly engineers without proper UI expertise.
It’s not always like that, but I would say in most cases it is.
No wonder these projects often fall as fast as they rise, but not only because of UI. Currently, the situation is changing, and there are very many convenient wallets and apps. But still, a lot of new projects such as decentralized exchanges, lack good straightforward UI and quality.