Fair enough, I still think “There’s no such thing as Dengism” is still just not a constructive conversation approach for reasons suggested by your reply, and “Stalinism” still has more coherent reference in your usage than a liberal sarcastically calling themselves a communist for being left of Hitler (on domestic issues), because you still (rightly) endorse many positions promoted by Stalin in a historical debate with Trots and others, while the liberal bears much less in common with a communist.