That terrible analogy does not produce a useful mental model on any level. You probably need to read Das Kapital.
If I said Nazis don't believe X, and held up Mein Kampf as an example, would I be implicitly endorsing it and a positive thing?
I think Marx is objectionable because he was, objectively, an awful person. I mean, just to take one single example, look at what he wrote about Ferdinand Lassalle in this letter to Engels:
https://marxists.architexturez.net/archive/marx/works/1862/l...
... Yes. That's literally what Marx wrote.
The first two paragraphs are particularly revealing on the question of whether Marx was, or was not, motivated by envy.
That's literally what you wrote to start the thread.