[edzzde]

> One reason you may care about hydration errors is because it’s an awkward user experience.

I don't know.. A hydration error is 100% an application logic error. It's not some "slightly worse UX". It means you are actually doing something incorrectly. I would even compare it to C++ UB.

[kevincox]

It's not at all comparable to C++ UB as React says what will happen in this case. But what React does is slow and has bad UX.