This 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.