I think you’re right here about clichés (I copied and pasted the é there; key combo didn’t work for me either!) and stock phrases. In fact, if at any point in a conversation, someone used the phrase “it is what it is”, I note that as the point where that person has given up on either digging deeper to the truth or doing anything about the situation. And that’s more of a passive cliché. The more aggressive ones, like political slogans, are far worse, and they encourage the intellectual laziness of others by trying to get them to accept a catchy phrase that effectively stunts their intellectual growth.