You have the choice of managers knowing what the job is or managers that have never done the job. In general managers that know what the job is are better managers.
True, but there should always be a rewarding progression for someone that doesn't want to be a manager or change role. Because if the only rewarding path they see is to switch employers -or get counter-offers to try and get their wage bumped, then that's a problem. It's also a common theme for companies to be forced to give higher wages to new-hires, leaving their own veterans (that are actually more valuable) behind.
