I didn’t say the alternative was left lane driving or condoned left lane camping. Your response to the other person sounded like you were only used to one type of freeway/highway configuration.

I am pointing out your experience may be a bit local to your area and middle lane driving for through traffic (also called commuter traffic sometimes) is the safest option that minimizes risky lane changes on some roads. But this does contradict the edict of staying in the right-most lane which is different from keeping-right-except-to-pass I think.