The RTO mandate is the new company layoff cheat code.
Anytime a company wants to lay off employees but doesn't want to fully pay out what they'd have to -- hit the easy button. They will likely eliminate a large portion of those they were planning on cutting in addition to not having to pay unemployment if the individual resigns.
This isn't even getting into how much a company like Amazon likely saves in stock option pay if the employee bolts before vesting date.