Musk founded SpaceX and bought Tesla when it had like 6 employees, so everyone working in those two companies is used to his management style.
Twitter was a huge and sort-of stagnant company, they must feel as if they were hit by a hurricane, and this filters out to all sorts of media including HN.
Also, Twitter is all about publicity. We don't see what's happening within SpaceX, but we all watch whatever happens within Twitter in real time.
Why participate in the hysteria if doesn't mean anything to you?