In the internet age, this is a necessity because the other pattern is the same claims repeated over and over again with the expectation that a comprehensive rebuttal must be provided each time. At some point you have to name the thing so it can be added as an entry to Wikipedia and move on. See also: how global warming denialists have an evergreen grab bag of false claims to pull from and expect a thesis-length answer to each one.
Also, this is nothing new. Commonly referenced fallacies like tu quoque are a way of saying that the other person is arguing from shaky ground, and their argument does not need a complete rebuttal until they refine it a bit. In fact, the comment I was replying to can be considered a derivative of the just-world fallacy[1], substituting the hand of the free market for the kind of ephemeral karma that the original just-world fallacy implies.
[1] https://en.wikipedia.org/wiki/False_equivalence
(This is why I don't think labeling is a rebuttal.)
I find simply reminding myself that duty doesn't actually call[0] to be a very easy way to walk away from any debate that isn't going anywhere productive
But the rest of the comment supports the first part, which you seem to agree with.
Plus, "Jacobin whinging", seriously? Advocating for a living wage is "Jacobin" now?
This seems to capture the current intellectual zeitgeist very well. Once we name something, we can dismiss it without engaging it.
I was going to read the rest of your comment, but I decided it was "Jacobin whinging" so I realized I didn't have to.