The reasons why your lot voted for Trump are because you Americans live in a bubble of your own. That your decisions, and that those subsequently made on your behalf beggar belief, has nothing to do with Brexit beyond the fact that Trump seems willing to lend weight and leap under the covers with Nigel. . . .
I wish you were correct about that, and that Trump's election was a purely American anomaly, but I think actually he tapped into the same current of anti-elite resentment that has energized the neo-nationalist movement in the U.K.—and elsewhere in Europe, for that matter. That their policy prescriptions may wind up hurting rather than helping the proponents doesn't negate the emotional value of "sticking it to the man." People who are angry enough tend to lash out even when lashing out is self-defeating.
I welcome your observations of why Europeans are voting this way. But your reaction seems to be disappointment with the results and an attempt to deny it happened. We had similar reactions here when Trump won with his nationalist stands. What's happening since then is that the other side is now taking stronger nationalist positions regarding workers . . .
I wish you were wrong about that, but I think it's a valid point: the centrist and center-right Democrats failed in 2016 to take seriously the economic grievances of working- and middle-class voters who gave Trump majorities in a sufficient number of states to achieve
a victory in the electoral college despite losing the national popular vote. Now, as they prepare for 2020, many of them are adopting policy proposals from the left wing of the party that they previously considered too radical.
But while the causes of this resentment on either side of the Atlantic may have much in common, the effects are quite different. Trump's election and the policy initiatives of his Administration—some of which have been ineffective or ruled improper by the courts on either procedural or substantive legal grounds—are easily, and, if a Democrat or a mainstream Republican is elected president in 2020, quickly reversible. If the U.K. exits the European Union, whether it's a "hard Brexit" or any sort of negotiated one that currently seems feasible, the effects will likely be impossible to undo.