According to the article you mention, we aren't talking about "the poor" but rather the white lower middle class, a group that depending on circumstances fluctuates between working and middle class. According to the article, this class is resentful of anyone who is educated and of the poor (probably especially the non-white poor) whose welfare programs they envy but either do not qualify for or are too proud to avail themselves of. 
The story in the article Joan Williams tells about her father could be told by hundreds of thousands of non-white lower-middle/working class folks too. The difference is that historically non-whites have not sunk to voting for overtly misogynist and racist candidates and they certainly haven't been gullible enough to place their faith in some rich con man who promises a return to the days before technology replaced muscle power. Trump isn't Superman.Trump whites were seduced and now the Right is going to have its way with them and the rest of America.