I don’t think the main issue is that this type of person has been put in charge, it’s that the system can fail because of the will of one person. It kind of reveals that the guardrails were decorum and at its core Americans elects dictators that up until now chose to behave well.

More generally I think in an age of social media democracies will have to evolve to prevent leadership cults. Maybe something like the head of state being indirectly elected by local representatives.