[IdahoEv]

OTOH, I've experienced a lot of people who know basic computer science but don't grasp any software engineering. Nor do they even realize that it's a thing.

Those sorts of people tend to be very focussed on clever algorithms and data structures, and frequently miss the larger picture and coding best practices. I've seen far too much code that had extensive CS cleverness at the root but was spaghettified, untested, undocumented, poorly performant, and not even tracked in a version control system. Such people often don't value writing code that other developers can read and maintain. On a team, clarity matters more than cleverness.

Good developers need both sets of skills.