Is that what that argument says?

Which one? It's a dorm room stoner debate type question except unlike many of those, this one has a totally straightforward answer. One of these ideologies has transparently morally repugnant goals and the other one doesn't. You can get there without even having to mention Hitler or Stalin.

Yeah I think I was trying to say that, but didn't say it well.

I'd like to get better at shooting this argument down, because it comes up a lot; most discussions about the evils of communism --- and I think communism is a very bad system! --- seem like proxies for "opposition to right wing politics is evil".