I agreed, not realizing how much of a shift it was. It's an entirely different profession, and it's made me wonder how realistic the notion of an Engineering Manager is. It's sort of like the "full stack" engineer - yes you may have baseline competency across disciplines, but you're not going to excel at all of them.
Sometimes I wonder if engineering teams would best be served by someone who actually went to business school for management. Likely there would be tension as this person is very unlikely to have anything beyond conversational technical knowledge, but I'm not sure what we're doing right now is any better.