This is the true answer. A lot of people have moved into far away (cheaper) bedroom communities to save money.
Also Google themselves would have a huge issue justifying their own real estate if people aren't in it "post covid". They are a publicly traded company so they would be forced to sell it off to appease investors.
All in all I think Google has shown it's true colors here. They don't have a damn about their employees. This reeks of boomer micromanaging 101.
I think that to fight this stockholders should push Alphabet to sell of their properties now. Should do the same with Amazon as well.