Except that employers aren’t going to become less picky when switching to remote; likely, they will become even more picky and will want to improve their employee base since the supply has increased and that will be possible where it wasn’t before.
There is no way you can filter out top 1/100 candidates anyway.
For top US firms, it may well be that there is a better pool for top talent, but not THAT much better. I believe it would be possible to do inferences from # of non-US citizen in FAANGs.