My feeling is that the overwhelming majority of Tesla critics do not hate Tesla, and do not want Tesla to fail. Rather, they see Tesla as a small, unimportant, poorly run company that gets far more press (positive and negative) than it deserves, and who respond by needling Tesla super-fans. The super fans, in turn, react by treating this as shocking, but it's not really. Tesla critics are treating Tesla like a normal company, and most companies are not particularly well-liked. Nobody cares if Amalgamated Widgets rises and falls except it's investors and competitors.
> Do they also want SpaceX to fail?
No. But also, Tesla critics, I believe, view SpaceX as a VERY different company. Tesla is just another car company making just another car. SpaceX is something else entirely.
If your mental model is "Tesla is like SpaceX", this probably feels weird to you, and the way Tesla gets covered in the press - as if it was merely a car company! - must be maddening. If your mental model is "Tesla is like Saab", this seems pretty obvious.
> Most tech giants of recent times have done things I would consider to have made the world a much worse place.
I would never dream of calling Tesla a "tech giant". It's a car company, it's not making very good cars, it's not making them very well, it's not making very many of them, and it's not making a lot of money off them. I am incredibly tired of hearing about Tesla. Even if it wins, the Tesla end-game is to be another big successful car company, and I don't care about big successful car companies.