The Picard Maneuver"Thought-Terminating Cliches"
HegarThis term seems like just an insult wearing academic robes. And a tautology. All cliches over simplify the world, side-stepping complex analysis.
There's nothing "thought terminating" about acknowledging that a problem is beyond your scope - which is what the first two mean. I've only heard YOLO used to encourage risk-taking, which is completely different.
Realistically, these are often just social cues that you're bored with the conversation.
Obviously whether you use a cliche to avoid thinking deeper or not depends on context and individual. It's not inherent to the phrase.
Echo DotThe second one seems to be a bit of an Americanism I’m not really sure what it means. I take it to mean there’s nothing anyone can do about it, e.g. there is a storm coming and you are not sure if it will hit your house or not, whereas the first one means there’s nothing we can do about it but some other human can e.g. above your pay grade/ out of your responsibility.