I don't work in Amazon nor I have any particular information about this (although I have friends working there) but isn't this the intention in most companies that implement RTO against employees' wishes? There's always some collateral damage when virtually irreplaceable people jump ship but this is definitely planned. It's a cheap way to get rid of headcount. It only works when most big companies agree to do it at roughly the same timeline, otherwise people will just switch companies - RTO is too big of a perk to ignore, specially if you have a family.