I don't think you can separate the two. It's like separating Steve Jobs and Steve Wozniak and giving 100% of the credit to Woz or Jobs.
Certainly Shotwell has made the business and operational side of the Space Falcon business smooth and helped win commercial/government contracts. But do you really think it is shotwell who is aggressively asking people to throw away designs, delete components, and iterate quickly by getting rid of testing steps? She is more of a Tim Cook than a Steve Jobs.
Look at this 1 hour q&A at Starbase, time index 13:30, there's no way this five stages of engineering comes from Shotwell. It's not her personality, but Musk's instincts here are absolutely correct.
And it's the number one reason why SpaceX made it to orbit, and Blue Origin didn't, and why Starliner is taking forever. Musk doesn't care about blowing up 29 raptors and blowing $50 million on a test that will most likely result in a RUD. Shotwell would never have authorized that, she is much more concerned with keeping SpaceX's finances in order and the contracts flowing, and Starship simply doesn't have many launch customers who need 100t in orbit, and where launching on Falcon 9, or Electron's is good enough.
> Shotwell is the reason that SpaceX was able to install 29 Raptor engines in a single night to satisfy Musk's whims.
Really? Based on what? The reason why they could pull that off is because Elon forced a shitload of SpaceX employees to be relocated from other parts of SpaceX to meet an arbitrary and unnecessary deadline. You think Shotwell would have ordered 24/7 round the clock booster assembly?
Keep in mind that it is Musk who insists on production automation, because his #1 priority is $/kg thrust, and so Raptor engines are pointless if you can't mass manufacture them. There is currently no economic reason for SpaceX, as a business, to mass manufacture these engines which have never been to orbit, even on a prototype demonstrator. Again, this had to have been Musk pushing for this, not a seasoned CEO/businesswoman looking to keep the company on track.
The entire Starbase is like a Google X, or Xerox PARC, it's a CEO running a big profitable company smoothly, so it can fund the crazy R&D ambitions of something else. That part Shotwell is responsible for, but there's no evidence of her involvement at all @ Starbase. She's never even been recorded being there AFAIK.