Good column.  
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But it's not just art criticism that uses such obfuscatory bafflegab.  'Cultural studies' of various kinds is equally drivellous (e.g. 'interrogating the heterogeneity of racialized archetypes').
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I once had a professor who taught me one of the most valuables lessons in university.  It was in sociology and he assigned a reading full of that kind of stuff and when class time came he asked numerous people to talk about what they understood from it.  Several responded with various efforts to elucidate it until one student admitted he didn't understand it he even said it didn't make sense.  
"Eactly!" the prof shouted.  "It doesn't say anything!  Just because it's in a book doesn't make it good.  Trust your own minds.  If it seems like nonsense, there's a good chance it IS nonsense."