SpaceX

There have been tons of reports of his subordinates having to manage him.

I've seen rumours like that online, but I doubt there are tons of reliable testimonies. (Though if you feel like spending the time digging some up, I'd be happy to go & read them, and update my views accordingly.)

But perhaps there's no smoke without fire, and I do see how his style could lead to rumours like that.

I'll start by mentioning a couple of his edicts.

1. Something like "try deleting the part or process" [from your design]. He had some rough metric like "if you aren't finding that 10% of the parts you try deleting end up needing to be added back in [to the design], then you haven't been deleting aggressively enough".

2. Something like "assume the requirements [that you have been asked to meet] are wrong". Talk to the other teams, and the people designing your interface or creating your requirements. Push back.

These both seem plausibly correct to me, and it's these - and perhaps many dozens of other similarly 'weird' aspects of his approach that he has adopted over the years - which are why I suspect his multiple successes are not a fluke.

And then, you can imagine a similar type of thinking applied in a 'meta' way. Basically, if Musk isn't finding that at least 10% of his crazy edicts are getting significant push-back from his teams, and eventually get dropped, then maybe he's not being crazy enough. And that certainly means there'll be examples that could lead, sometimes with some embellishment, sometimes not, to the kinds of rumours you allude to.

says they have to change a design because he thinks it doesn’t look cool

Well, yes, he's definitely weird in this way sometimes. Often placing value in aesthetics, and sometimes comedy. (Like with the "make the rocket more pointy" thing.) But seemingly not enough to cause his projects to fail. (So maybe that's ultimately a good thing too; a bit of quirkiness to remind himself and others not to take things TOO seriously.)