I don't think this is true relative to international expectations? It's certainly more than it was pre-covid, but isn't it still limited time and low income for a high cost of living area?
I have been paid $3,232 to sit at home and do nothing the last month. Not including the stimulus check I haven't cashed yet. I would have made about $3,000 in the same time. That is completely insane to me. I do not see how that isn't extremely generous. I don't see how it's sustainable either.
That's hardly extremely generous for a city. Many people have rents between 1-2k which each up a third to two thirds of that. I realize it may be generous in your situation though. Re: affordability/sustainability, the alternative is possibly a recession as great or worse than the great depression, so the government is willing to borrow as much as it can to prop up consumer spending during the crisis. The idea being that if we continue spending we can avoid a demand crash and recover quickly once we can stop social distancing safely.