The prime example is "this says a lot about society"

Like if somebody says "It is what it is" I take that to mean mean "I'm done hearing you complain about this."

It has since gone into my lexicon of thought-terminating cliches.

It's not that Trump doesn't have a coherent reason for some of his policies, but it very much felt like a dismissal of thinking along the lines of "His strategy is too advanced for us to know what games he's playing, so I don't have to explain it."