@sun During my first tech job, I've had someone telling me straight up that they do NOT want to learn anything outside of their programming language. Not that they do not want to be given tasks outside of their job position, but that they refuse to bother with anything that isn't programming. It was also the kind of person who would get complain that you can't drag and drop PHP projects on some servers like in the good ol days.
Last time I checked what they're up to, they're linkedinmaxxing by making blog posts like "What is NPM?" Which feel like they've been written by a junior who got given this question as an assignment with only 2 hours to write it. And yes, this person is supposed to be having 5 times more experience than I in tech