In a functioning democracy, there are legal systems already in place that prevent extreme negative consequences for the population and the democracy itself. The US just isn’t a functioning democracy, and the checks and balances that are supposed to protect the voting system have been eroded. Impeachment is one such mechanism that’s become dysfunctional - a democratic process to protect the democracy from autocrats. I do hope you’re right and the American people manage to pull through this somehow. But failing that, an intervention from either domestic or foreign forces can be justified depending on how severe the threat to the population is.