An UBI is a different matter altogether, IMO, and we can discuss it's merits separately. This is simply a temporary health emergency, and it's frankly ridiculous it's not treated as such.
Ultimately, the government ends up on the hook anyways. Either they temporarily pay them to stay at home, more or less, or end up having to foot the bill for their healthcare + all the other uninsured people they infect, or see Texas having to extend SNAP benefits, etc.
The main street economy is going to stay in the tank until this pandemic is under control. If it wasn't clear before, I think it's pretty clear by now.