When I meet fellow devs, I ask what projects they've shipped. Roles are near-meaningless across companies and convey 0 information about what their work involves in my experience. I appreciate that OP learned something about the job through this article.
This isn’t foolproof either and plenty of people can talk convincingly about running projects that they had little to nothing to do with.
I agree, it feels like roles help the most by getting you through the recruiter and in front of a hiring manager. Which is unfortunate.