Let’s look through your own Wikipedia link.

Nazism […] [has] disdain for liberal democracy and the parliamentary system.

The union hating, multi-million dollar lobbying, vote-bribing billionaire totally supports actual democracy guys, trust me!

Its beliefs include support for dictatorship

He actively supports Trump’s unitary executive theory and related policy goals.

antisemitism

Elon supporting an antisemetic tweet

anti-communism

He blames communism for making his trans daughter mad at him

anti-slavism

He actively supports stopping aid to Ukrainians and ceding their land to Russia

scientific racism

white supremacy

Nordicism

Here’s him spreading scientific racism that claims people of European descent are superior

homophobia

Elon refuses to enforce Twitter’s policies against homophobia and transphobia

ableism, and the use of eugenics

Elon is a techno-eugenicist

ultranationalism

white supremacy

He regularly promotes white nationalists online

The only very few, specific categories I didn’t find any explicit mentions of him doing in my 10 minutes of searching around were anti-Romani sentiment and social darwinism, and you’d be hard pressed to prove that everyone you’d probably otherwise consider a Nazi throughout history believed every single possible bullet point in this Wikipedia page.

If all this doesn’t make him a Nazi, then I don’t know what does.