Also MAGA is based on the idea that they can do anything on their own. And now they are sabotaging their own concept by inflating the dollar.
This must end in some kind of breakdown.
I didn't really answer the isolationism point, apologies. I agree.
There is no doubt governments have a role in massive events, and that the public actually wants them to 'do something'.
In 2008/2009 the G20 was formed by Gordon Brown to actually act in a coordinated way and deal decisively with what was a serious credit crunch. It worked. The lack of of a similar consensus and coordination this time around however, is plain and could get risky.
In a world crisis it is risky to go it alone, or just blame someone else. But this attitude seems to be hard-written into the current zeitgeist. The virus will be beaten, but the economic hit /recession will not be beaten easily if there is a credit crunch. This is about debt not being honoured and borrowing not being available because of a failing of trust.
If a country's banks get in trouble, and those banks can't be bailed out with loans, because no one will lend to them for fear of default - there will be trouble. This is when a 'go it alone;' strategy will collapse; as with countries defaulting, then so will global demand. This and its subsequent 'domino effect' could be a fire storm that will cause far more pain than the virus.
The virus is just the straw. The camel's back is the world economy.
Problem is, according to human nature, we try to carry out "former successful strategies" in the first place, before we go on to think about alternatives.
So it's always a nosedive before the way up again. So far economy only fell on its knees...
Also, the majority of the public thinks in a one-dimensional way, so they'd support more simple (understandable) "solutions". The majority wouldn't trust some complicated plans and international relationships as much as mentioned "do something" decisions. In fact it seems to be "do something, and make us look strong, too".