Respectfully, I think you’re comparing apples and oranges.
Yes, his companies did great things, and I think took on both space flight and electric cars in interesting ways. But both those things had their adherents within the industry: people have been advocating for programmes like SpaceX and a move towards electric vehicles for a number of years, Musk was just one of those willing to address the problem in a new way (in space terms it’s worth noting that Bezos is doing it too, and in electric vehicle terms Musk had a first mover/new starter advantage in that he was trying to steal conventional car market share rather than edging out his own market share the way a conventional car company would). Nobody - and I mean nobody, not a single transport engineer I have met - is enthusiastic about the Loop or Hyperloop.
Moreover, both those things were problems without current solutions. This is a problem which has a solution. The solution is socialised mass transport, and high speed rail, and moving away from personal vehicles in urban environments). This is not a technical question, it’s an ideological one.
You can fund the Loop, or you can build conventional HS rail at a fraction of the cost, and fund multiple projects at once.
I give credit to Musk for his acheivements. But he’s talking out of his arse when it comes to mass transit.
(Source, FWIW - chartered engineer working in public transportation and rail)