Are Babies being Baby-ed Too Much?

We stumbled upon this by chance, the Tummy Tub Baby Bath. A design originating from the Netherlands, this tub is meant to make bathing babies easier as it causes them to take on the foetal position they are accustomed to. Along with some other advantages like being ergonomic and so on, it makes child bathing easier. A similar concept of re-creating some of the environment in the womb, are sound therapy CD's, which mimic heart beat to soothe cranky babies.

The question is, should babies not begin to get accustomed to the world as it is, rather than be attached to pre-birth conditions?