Who told you that you'll have a job until your performance drops? Was that the contract? You'll have a job for as long as you're needed to the company. Once your services are no longer required you'll be laid off. Why should anyone pay you if they no longer need your services? Is this the social contract in USA?

I see nothing deceptive nor cruel in it, unless Google promised not to fired these people

Now, Visa workers and people who moved should be taken care of separately, I agree. Firing them is not ok, at least not without extra compensation. However, are they a big percentage of those laid-off? Centering discussion about minority like if they are majority isn't helpful.

As for power imbalance.. Those hired at FAANG are one of the smartest people in the population. They should have known all of this and factor in all of this. It's hard to treat seriously people who make $300k/year and say they were cruely harmed because they were fired and now they may need to apply to another job.

I wrote this elsewhere, but I do not support Google. I view them as amoral, they make whatever is necessary to maximize profit.