You conflated, misrepresented and simply ignored so many things in your statement that I really don’t know where to start rebutting it. I’d say at least compare SpaceX to NASA with space exploration but, even then, I doubt you have anywhere near enough knowledge of both programmes to be able to properly analyse, compare and contrast to back up your claim. Hell, do you even know if SpaceX or Tesla are even using an agile methodology for their system development? I know I don’t.
That’s not to say talent is unimportant, however, I’d need to see some real examples of high talent, no process, teams compared to low talent, high process, teams, then some mixture of the groups to make a fair statement. Even then, how do you measure talent? I think I’m talented but I wouldn’t be surprised to learn others think I’m an imbecile who only knows Python!