So politics, not the merit of the EV company. This was a EV company summit, not a labor unions summit.
Democrats believe that unions help keep wages high and are good for the economy.
If Musk wasn't anti union he probably would have been invited. I say probably because of Teslas issues with racial discrimination
As for the claim that Tesla has racial discrimination issues—that’s a distortion. Nearly every major company gets hit with discrimination lawsuits because civil rights law has been weaponized to make that outcome nearly inevitable:
https://www.richardhanania.com/p/wokeness-as-saddam-statues-...