Huh, quite an interesting take. On the contrary, I associate an appreciation of brutalism with those who post staunch free-market capitalist comments.
I have many taken architectural tours in Bucaresti, Plovdiv, Sofia, Skopje, Moldova, Tbilisi, Beograd, Kiev, and Moscow. Unanimously, the tour-guides presented these buildings with disdain for their aesthetics and association with authoritarianism. All of the tour-guides were definitely left/liberal-leaning, some to the point of dreadlocks and Che Guevara hats. (Thanks for the links, by the way, I had never heard of Own Hatherly before!).