On: Companies promote incompetent employees to management to limit damage they do

[anonymousiam]

Perhaps they weren't incompetent in their prior role, but some people have difficulty transitioning from a technical role into a managerial role, so they become incompetent at their new role.

https://en.wikipedia.org/wiki/Peter_principle

[Aurornis → anonymousiam]

I included Peter Principle in my comment above because it's one of the rhetorical tools these people invoke to comfort themselves.