I hadn't jumped through the registration hoop either - but I'm horrified at what you found there. I'm glad my copy of Janson is an older one.
For all the pretensions of the art world (and especially the Leftist inhabitants of it) of breaking away from rigidity, and tossing down barriers, etc, the truth is that their intention is to impose rigidity and to erect barriers the likes of which we have never seen in the (free) West.
RP, what was the name of that text which exposes the PC nonsense being taught in Art History classes today? And which has apparently infected even Janson?