Anecdotally, I have never heard of anyone getting a job at a FAANG with that kind of salary working remotely from day 1. On the other hand, I have met several people who started on-site but switched to working remotely later. I'm not saying it's not possible to do the former, but it seems like it's way easier to work remotely for a FAANG if you've already proven yourself, which obviously doesn't work if you have already moved to a lower CoL area and are looking for work.