What's worse is when people's brains just turn off and they defend and support an actual trillionaire Nazi with immense political power and an international propaganda platform.
You're replying to someone who is on the record defending Musk's Nazi salute by calling people names and attacking anyone who recognizes it for what it is or points out how it aligns with everything else Musk has said and done.
Set showdead=true and read his posting history. If he didn't want people reading his full-throated defense of Musk's Nazi salute and his attacks on anyone who disagrees, he shouldn't have posted them. Nevertheless, he'll attack you for merely reading it, as if you're the weirdo for reading what he intentionally posted, rather than him for posting it publicly.
Ask him to post a video of himself performing that Nazi salute and he flips out and calls you names. So he plainly understands what it means: he thinks it's defensible when a trillionaire oligarch does it on international television, and feels obligated to defend it himself, but would never perform that exact same Nazi salute himself -- and becomes irrational and hostile when asked to explain why not.
By "calling people names," I mean his own words:
Political: "social justice warriors," "in an echo chamber," "literally fascism," "a bit fascist," "silencing the opposition," and "censoring others."
Mental-health smears: "lost their mind," "consistently hostile," "frustrated," "so upset," "getting angry," "unhealthy," "unhinged," "What is wrong with you?" and "Maybe they can get you the help you need."
Dishonesty and stupidity: "are you pretending to be stupid here?", "your 'act'," "projecting," "lying and spreading lies," and "I'm here in good faith (unlike you)."
Personal attacks: "emotionally attached," "unable to take criticism," "convinced that no matter what, you're right," "used to always having your way," "reevaluate your life choices," "I find your conduct pretty embarrassing here," "You need to self-reflect," and "You need to cool down."
That's his argument technique: replace evidence with ideological labels, personal attacks, tone-policing, reality-reversal, and amateur psychiatric diagnoses. Precisely the nuance-free, brain-off political name-calling you rightly warned against.