Art farts
You know what’s excellent? When fancy-nancy people use big words but not necessarily correctly. Just a heads-up, Mr. Arty Man: I do not think "prevaricating" is likely to be the word you want there. First of all, you don’t prevaricate "over" something, you prevaricate about something. But that’s neither here nor there, since what "to prevaricate" actually means is functionally the same as "to lie." I’m not getting the sense that what you’re trying to say here is "he was always lying about how his art should be shown."
Or is it? I mean, it makes no sense. But, hey, you’re an art critic, yeah?