I would agree that it was aggressive and alienating. Another issue is that it was extremely easy to take out of context, which it widely has been. It’s so it of context that people who didn’t know the context proudly labeled themselves as “deplorable” showing solidarity with David Duke. Never realizing that’s who the original context was about. But it’s hard to speak in a way that will never be taken out of context. “You didn’t build that” for another example.
https://en.m.wikipedia.org/wiki/Basket_of_deplorables
There wasn’t ambiguity to clear up in context, but she did regret saying “half” of his supporters. She was clearly never saying all of them. Unless you remove the context.