The original ethos was that you didn't want the company ran by MBAs, so you wanted to build your management team by tapping into talented engineers.
Of course, this can backfire in many ways. You end up wasting engineering talent, and as the organization grows, managers spend more time on paper-pushing than on creative work. And there's no shortage of engineers who are just bad at reading, talking to, and managing people.
But the huge perk of management is leverage. If you're technically competent and credible, and want something to happen, your team will see it your way. If you're a random "ideas guy" in an IC role, that's not a given.
Of course, this can backfire in many ways. You end up wasting engineering talent, and as the organization grows, managers spend more time on paper-pushing than on creative work. And there's no shortage of engineers who are just bad at reading, talking to, and managing people.
But the huge perk of management is leverage. If you're technically competent and credible, and want something to happen, your team will see it your way. If you're a random "ideas guy" in an IC role, that's not a given.