Stathis Kouvelakis, a member of Syriza's Left Platform faction that later split from the party, had this criticism [1] about both Varoufakis and his successor Tsakalotos (another economics professor), which I think has some truth to it:
Tsakalotos said he was very disappointed by the low level of the discussion. In the interview to the New Statesman, Varoufakis says very similar things about his own experience, although his style is clearly more confrontational than Tsakalotos's. From this it is quite clear that these people were expecting the confrontation with the EU to happen along the lines of an academic conference when you go with a nice paper and you expect a kind of nice counter-paper to be presented. I think this is telling about what the Left is about today. The Left is filled with lots of people who are well-meaning, but who are totally impotent on the field of real politics.
[1] https://www.jacobinmag.com/2015/07/tsipras-varoufakis-kouvel...
This is telling about what the Euroarea is about today.
I suppose, at least it's a good thing if those naive professors, now that they are not so naive, explain the rest of citizens how the system really works.