I don't think they actually get "angry", but rather pretty annoyed. I do the same thing. If someone asks me for help or something and I see them "hunting and pecking", then I get slightly annoyed that this person hasn't spent a couple hours learning how to properly type. It would save them so much time! I just want everyone to be more productive and something like typing is a pretty easy place to gain productivity.
I fall back on touch typing when I want to keep typos at a minimum, but it's so much slower for me than "hunting and pecking" (even though I don't look at the keyboard when doing it, so it's hardly "hunting"). But that speed increase comes at the cost of accuracy. If I could get speed parity with touch typing, it'd be amazing. I've spent days trying to learn. I don't know if I'll get there. Please forgive me, senpai. :C
I do get angry too, in a sense that this person has not spent any time optimizing when it's their full time job. How can a person who cannot optimize basic things for themselves be expected to lead a group? It smells a lot like either corruption or incompetence.
At this point, I hope you'd owe up to taking the burden proof that a person who cannot optimize basic things for themselves cannot be expected to lead a group