I'm remote for Meta/FB I can say that remote means remote. There is no pressure to come to the office, and they are OK with people relocating away from the office. The comp gets adjusted based on zip code or something like that. You are probably coming out ahead anyway, from what I have seen the adjustments are smaller than the cost of living and tax comparisons.
I do live in the area and meet up with coworkers from time to time because I enjoy that, but there is really zero pressure to do so.
The home office thing is because when I get devices they send them to the closest office first, then they will get delivery to my home. Never heard anyone having an issue because they are too far from an office. I do have coworkers that live far from offices.