It's not rocket science, it's because they don't have to raise the kids - I'd be surprised if elon saw his kids for more than a third as much as the middle class sees theirs. Hell he wasn't even at the birth of his latest.
Instead it's "oh, I'm doing what's right for the environment."
One of these two behaviors is intellectually dishonest. Which one do you think it is?
Aside: Most of the parents that I know are extremely involved in their kids lives, even if they pay for help.