People seem to think this is going to magically result in optimized code that is comparable in performance to properly written C++. It won’t, that’s just totally unfeasible.
Anything low level, performance critical should still be written in C++. That said, the vast, vast majority of code is not performance critical and blueprint is totally fine for it, C++ converter or no.
I agree C++ documentation is lacking. It is improving, just extremely slowly.