Interesting that DINOs are changing their party affiliations now. I'd have thought most of those who wanted to would have done so between 2009 and 2014, in the "Obama is a Kenyan Muslim Socialist Atheist" era of political discourse.
I think the Donald not only embodies the reason they left the Democrats but also why they were Democrats in the past. He actually gives what seems to be economic solutions for the lower middle class that don't help the very poor. That is, high tariffs, mass deportation, a ban on immigration, an Obama like stimulus, taxes on incomes under $50000, and maintains public old age insurance. (Though this really sounds as much McKinley as it does FDR)