When you're either unwilling or incapable of understanding other people's perspectives it is indeed very difficult.
Try this: steelman the argument that what Musk did all those months ago wasn't a "literal Hitler salute". If you can do that, I suspect you'll find it a lot easier to have nuanced discussions about that topic (and possibly others) going forward.
Looool is that all your argument? "Everyone hates this one simple trick against nazi: try to forget that they do nazi things, and boom!, you're no longer scared of actual nazis"
Fuck the salute. I can look at everything else he's done and still think he's a terrible individual that should not be given money or power.
Or we could look at everything else he does, like advocate for the AFD in Germany.