Re: We've been here before...
I still know and use x64 and ARM assembly (and a bunch of 8-bits, but sadly never get to use them) for things like patching binaries we don't have source for and the occasional really timecritical thing - like getting cycle count cheap. It's why I said 'almost nobody' and not 'nobody'. I also know from trying to hire people that that skillset is incredibly rare.