Historically, Americans have had a narrow view of "high crimes and misdemeanors." Maybe we need to take a look at the global consequences of an imperial presidency rather than just those things that offend our sensibilities.
Our current crisis is not one in which the application of the Constitution is uncertain. Rather, it's a question of whether or not the Constitution even matters in the face of a charismatic leader and party loyalty.
Where mankind stands in the robot age will depend on the vitality of democracy when the transition happens.
The nation state is going the way of the dodo. Either a transnational capitalist class will structure power relations throughout the world, or a global democratic movement will step up and demand justice. Which would you rather see happen?