Yep and those people will lose everything should they have to go to the hospital and be admitted for over a day. To collect unemployment, these people had to be "let go" from their insurance providing jobs. And I strongly doubt the people who were let go trend towards being able to afford COBRA. So even if they do survive which is more likely than not, they will be ruined financially after weeks of no or diminished pay along with 5 figure hospital bills.

Hasn’t the federal government committed to paying for all covid treatment and testing costs of uninsured patients?

Yes they did [0], but the current administration is "bad" so we can't bring up any of the good things they've done.

[0] https://nypost.com/2020/04/03/us-government-will-cover-unins...

And also because their promises are meaningless. Trump said people would be covered, but as recent as the 9th of this month, there isn't a real plan to do so.

https://www.politico.com/news/2020/04/20/coronavirus-treatme...

They do, they just don’t care. Desperation and suffering for the poor is the system working as intended.