I suspect that the only reason any Trump base people are abandoning him over Corona...

[orwell]

4. The fundamental tenet of modern conservatism is...

...screw you. We are only in this for ourselves.

They leave him when Covid affects them directly or a close friend or family member. Up to that point it is something that affects someone else. In that situation you can conjure up all sorts of magical thinking.

It's a hoax.
Libs are taking away my freedumb.
Commie libs are out to get fearless leader.
Lib scientists are out to get fearless leader.
Libs are trying to tank the economy.
Libs have figured out a way to get handouts.

And on and on.

They hate lawyers until they need one.
They hate government handouts, but don't touch Medicare or Social Security.
They hate "Obamacare" but don't take away the ACA.
They hate budget deficits but love excessive spending on the military and generous tax cuts.

As long as they are the beneficiary...poof...magical thinking.

If someone else benefits...evil lib socialism.

It really is baked into the fundamental world view of the modern conservative.