What you are saying makes sense, until you consider an alternative.
In the coal mining industry, a truck driver with 1 year experience gets paid the same as a truck driver with 30 years experience. And, this makes total sense because they are both expected to perform at the same level.
Seniority still matters. The senior workers are given the first pick of the trucks so they typically drive the new trucks. They get first choice for over time, they get paid more vacation pay, and they have more job security when there is a downsizing or restructuring.
That makes complete sense, that other guy is waaaaaaaaaaaaaaaaaaaaaaaaay out to lunch. If your job is putting mail in mailboxes, the average person could get the hang of it in a month or two, so seniority doesn't improve performance.
Privatize the Post Office. It's a bloody dinosaur concept anyway.
I agree but with the proviso the good employees will automatically keep their jobs.