My connotation of Stalinism simply refers to the penchant for exclusion and defamation of those who go against doctrine, no debate necessary. That would define the Blankfort mentality. It is a kind of "purging" mentality, regarding the pro-Palestinian movement. I wouldn't go so far as to accuse him of wanting to liquidate anyone. Blankfort's recent writing have been a kind of show trial of Chomsky, replete with lies, explicit and implicit.
DG