I think they're too far down the rabbit hole...
And it's not like their constituents will hold them accountable. Thanks to entertainment masquerading as news, some people are absolutely convinced that Trump's allies are helping him "drain the swamp."
The lawful ways to remove a President are painfully few. There's no Thundering Cockwomble provision in the Constitution, and Donald Trump has already proven that impeachment is useless. People are talking about the 25th Amendment, governing presidential incapacity, but that still requires Congress to act and agree. There is no way that testudinate hemorrhoid of a Senate Majority Leader will let a vote happen that ousts Trump. (I'm still trying to figure out how a people who hold an office that is not mentioned in the Constitution, and which is -- by definition -- a partisan office, can be allowed to wield so much power in the various Houses of Congress.)
Even Sen. McConnell tried to jump on the bandwagon of blaming the previous administration. That indicates they are accepting the inevitable consequences of pandemic-level mortality across the country, and are trying to salvage their politics by finding someone to blame. It's no longer "It's a hoax," or "We're doing great." The message is, "Hundreds of thousands of people are going to die, and we want you to think it was our now-inconsequential political adversary's fault." Statesmanship has devolved to politics, and politics has devolved to meaningless fanaticism.
The thing that surprises me is that it seems obvious there is going to be an economic cost way over and above the lockdown, because if the current administration don't get their finger out, the rest of the world is going to socially distance itself from the US for fear of contamination.
And if that happens, I'm worried that the Trump administration will keep spinning conspiracy theories wider to involve the rest of the world, and then threaten military action to force the lifting of restrictions and sanctions. Countries with well-developed militaries, whose leaders blamed their own economic failures on others, haven't historically fared well.