I apologise for not being clearer: I was explaining first why just a single flippant response is not adequate, and also saying that if you want to post a response like that to a post like this maybe you should substantiate your argument a bit more. I can come up with a million reasons for why someone would respond that way and your rationale makes sense, but that doesn't mean that that was the rationale in play here.

It's not obvious to me that people will take a low-effort dismissal of their personal issues and turn that into a valuable learning opportunity.