The term “whataboutism” is a tell for intellectual laziness at best. Considering multiple particular cases to draw general conclusions is basic ratiocination. You might as well just call the person you’re talking to a “chud” instead and be done with it.
More often than not when I've seen "whataboutism" used here it means "You can't say that (about me), I said it (about you) first!" which is in my opinion, intellectually lazy. There are times when a bad faith whatabout-ist argument is made as a diversionary tactic and they are frustrating, but the original comment[0] we are discussing does not feel like that to me. In fact the comment they were replying to is making the lazy and intellectually lacking argument.