I don't get why there is so much Elon Musk fanboying in tech/libertarian circles. All the businesses the guy is involved in are heavily subsidized by the US government, and yet he gets heralded as a champion of libertarianism.

I mostly see the fanboy stuff coming from generic technophiles and millennial liberals/environmentalists.

It wouldn't surprise me too much if some libertarians are big fans, there is a lot of overlap between technophiles and libertarians for whatever reason. And I suppose moderate libertarians wouldn't oppose subsidizing corporate R&D if there are plausible positive externalities. Not all libertarians are purists.