Once I hurt my back, had to drive for three hours, park far away, hadn't eaten all day, and when I stopped at a restaurant, having hobbled there with my bad back from a distant parking spot, the hostess was absent for ~5 minutes and when she finally showed up she was distracted and talking to other people multiple times while I tried to get an answer to how long the wait would be and if I could get served. So far, I've lived a fairly easy life, and I've always tried to be polite and even keeled - but in that moment of discomfort, tiredness, hunger, and disrespect, I genuinely wanted to be rude to the hostess.
The point of the digression is, I imagine that's what being the CEO is like, only it's not once. It's every day. And the more committed you are, the more hours you subject yourself to this kind of thing. You just want things well documented, bugs fixed, quality high, you want people to answer questions etc. When you've been dealing with this all day for decades - I can see how easy it would be to be a bit impolite.
Have you ever dealt with bad docs? Seriously!!!
It's toxic. He's being nasty. He could say everything he does without the snapping, blowing up at questions, dramatic sighs, 'oh boy's. It's all so incredibly passively aggressive.
And that's actually the worst bit! It's hard to call him out when he's not explicitly calling them 'idiots' or something. It's like it's some kind of plausible deniability of being horrible to people.
But I don't know these people and maybe they're all fine with it. And Wolfram is paying the bills so it's his style if he wants.