Michael Moore's explanation of Trump's victory - that his voters wanted to throw a Molotov cocktail into a system they hated - jibes with your explanation. However, be careful not to exaggerate this - 75% of Trump's voters were relatively wealthy, mostly white people. They voted for him because they recognized the message of bigotry that the GOP has been chanting for decades. In that, Trump was no different than past GOP candidates. I think it is clear that the age of the demagogue may have  arrived in the US.That was clear from when Trump became the GOP candidate. Imagine how much worse it could be if the demagogue in charge was actually smart and competent. But that will come, unless the political right in the US is brought under control. That will be hard but it is not impossible.