I tend to agree but, playing devil's advocate, is this true for other roles? Does a movie director need to know how to build sets? How to sew costumes? How to use Blender/Maya/Houdini? My manager can code, used to code, sometimes does code, but they aren't familiar with their team's current work.
Like imagine you were a coding manager 10 years ago with AI experience. Sometime over the last 10 years your team does AI infra. You, as a manager and as an IC, have zero AI experience (you've never trained a model, never used a trained model, never using any of the various AI frameworks). Are you still okay to manage this team or should you be replaced with someone who does have that experience?
Like imagine you were a coding manager 10 years ago with AI experience. Sometime over the last 10 years your team does AI infra. You, as a manager and as an IC, have zero AI experience (you've never trained a model, never used a trained model, never using any of the various AI frameworks). Are you still okay to manage this team or should you be replaced with someone who does have that experience?