Author here - yeah, what you're describing is absolutely what I would love to see more of. And of course my thinking was biased by my own observations at companies I've worked at as well as anecdotal confirmation from others, but nothing research based. I've seen a lot of lead/principal/staff engineers go off in their own world and dictate direction to the team instead of leading through influence and connection, which I've found very frustrating. Not all, though. And so the ones that did take a leadership role really stood out to me. I always tried to do that myself, as well, and remember what it felt like to be a junior.