Ah, I hadn't grasped your irony. I heard it suggested somewhat seriously recently, which miffed me a bit. Lockdowns were probably the least awful option in early 2020, but as you know it doesn't make them a great idea now.
My understanding is that parent was not joking. It's a great thought experiment though, and let's not forget that humanity did eradicate a number of diseases.
I wholeheartedly agree if worded as "people who can afford to but don't seem to be able to sit quietly in their homes for two weeks". I guess that's what you intended anyway.
(not everyone can afford to, e.g. they need to work for money for food, or they need to provide _actually_ essential public services.)