Except you're making the error of erroneously conflating invention with marketing trickery. He's only done the latter, ever. He's never made anything of value himself.

I don't really care about invention in this space, as electric cars have been invented multiple times over the last century.

What matters (from a climate perspective) is getting those cars into the hands of people to reduce the pointless burning of fossil fuels. And Musk, however you may feel about him (I have not been a fan since about 2015/16) did a great job there.

Your argument is pretty analogous to saying that Jobs had nothing to do with Apple's success.