The thing that really grates about TTT's post, even beyond the idea that making people angry is somehow a good thing entirely independent of why they are angry, is that it's also completely ignorant. Right now, the people most annoyed at Trump are probably Mitch McConnell and Paul Ryan, leaders of the Republicans in the Senate and the House of Representatives, neither of whom is even remotely a left liberal. Trump is annoying people across the political spectrum, both because of what he says and how he says it. Even if you regard that as a good thing (and, perhaps in a way, it could be, if the shake-up of the establishment is seen as desirable for its own sake), then it's not a good thing because it riles the left.
It just betrays a small-minded, petty form of politics, where the ultimate aim isn't to get things done but to disturb people you don't like.