> Good user experience is not about the average case, it is about the worst case. A UI that is clean and sleek, but does some weird and unexplainable thing 0.723% of the time that causes big problems, is worse than a UI that exposes more gritty details to the user but at least makes it easier to understand what's going on and fix any problem that does arise.

I have to disagree here. In this day and age, if you want to win users you need both, it's not an either/or. The UI must be clean/sleek and it needs to work at 9 9's.

So Vitalik witnessed himself that after so many issues, crypto is truly a absolute dead end after 15+ years.

Meanwhile payment systems such as UPI, PIX, Paynow, MPesa, Wise are just chugging along with their hundreds of millions of users.

This really doesn't come as a surprise to anyone really.