Why wait months for Nvidia to fix their compiler bugs when its far more faster to do it in the open? Libraries that invoke nvcc don't want to wait either.

So really closed-source compilers are a hindrance and you're subject to unspecified time-frames to even get to fix your issue rather than doing it yourself.

Intel and AMD have already open up theirs without question. Nvidia is the one who claims to be supporting openness in AI but can't even open up nvcc let alone CUDA.