"I have never been able to kill stupid things before they cause damage" One of the most important things an organization can have is a "no man". A project that I was involved in when I worked at Google was completed on time primarily because we had a very senior (DE level) engineer tangentially involved in the project. He was near the end of his career, and he just didn't give a f* about politics. He'd sit in design…
I don’t think Carmack - or the engineer you describe - is likely to be one of these - but anyone hoping to emulate them should be conscious of what they’re doing.