He describes it as
"childishly self-serving, but their tantrum has its origins in what I and others refer to as the 'Holocaust relativism' of the 1990s. Then it was fashionable to talk about Holocausts occurring everywhere -- in Bosnia, in Kosovo, in Africa (the "AIDS Holocaust"), in Chechnya; even, disgustingly, on farms (a "Holocaust of chickens, pigs, etc").
I think the MCB and others took this Holocaust relativism on board and now say "What about OUR Holocausts?" All a very grisly snapshot of the politics of victimhood."
I think he's got it.