I may have been wrong to interpret this comment as whataboutism, but whataboutism isn't just some petty logical fallacy to invoke in internet arguments, but a well-established political tactic employed by governments of the world to justify their actions. It's on a different class of rhetoric than the others in this list.
Soviet Russia invoked it all the time to justify their actions, as does Trump and currently China. Whataboutism is a favourite tactic of oppressive regimes, "practically a national ideology".