Woodworking in general has two mindsets on things that affect posture: A. everything at the same height for symmetry, or B. everything at its optimal height. Over the years I have found the divide is between young and middle age (for the most part) and those about 60 and over. Young and middle age see benefits of having TS, planers, BS, router tables and work tables at the same height. That is great for the consistency of work feed - such as outfeed of boards. However, it is not best for posture, work strength or Bad Backs. This is why older people notice the differences, when their health (backs/posture) let them know that something is wrong.
Best heights for tools:
Low level height: Thickness planers where force is needed to get things started (Upper thigh height)
Mid level height: Table saws need to be at a mid-level height where a balance of force and control are both needed. RE-saw Band Saws should be at mid level if a lot is done, but at a higher level for smaller work. (Waist height)
High level height: Router tables, Drill press, general Band Saw, and Lathe center height - where control is more important than strength. (Control is two fold: Precise Hand control and close detailed Visual Observation. (Elbow Height)
Once a person develops back/neck pain problems, (whether from individual DNA or years of not respecting the body ) shop tool height symmetry gives way to common sense!