It's basically a troll. There's enough internal diversity within the field and enough shitty historians desperate for attention that they could have found people whose credentials gave this turd some polish. The reason they didn't was because that's not necessary for the smaller goal of owning the libs.

But the devil hates to be mocked. So if you wanna shoot spitballs at this from the back of the room, I'm in. If not, reasonable! After all, it's a pile of low-effort shit that doesn't deserve our attention.