Yeah I think the only things that really need assembly these days are vector/SIMD (e.g. writing a video codec), really low level stuff for interacting with hardware (writing an OS) or if you're actually working on CPUs (how I learnt).

It's kind of useful for understanding compiler output on godbolt, and occasionally for debugging code without debug info.

But I successfully wrote a ton of C++ for decades without knowing assembly. It's not really necessary.