Earlier quoted context omitted.
Companies really struggle with this, and in both directions. Startups and scale-ups tend to overcompensate to the point management hires get interviewed as super-ICs, where they'll be expected to answer technical stages at (or even above) the company's top IC standard, but only get a couple of basic scenario questions about management that anybody could answer. Sometimes you get lucky and they're good at both, but it…
What's IC?
Obviously there's a spectrum of management that an IC can undertaken, but this is typically based around their good will and soft powers, but the wider point is they're not supported to have direct reports.