I don't know about that as a blanket rule, mrsr My DS doesn't seem to have much respect for routines and he's a pretty happy child! Each child is different, though, and that's why we need to tune in to them.
As for bathing every day - they don't need it, but I also don't think it's bad for their skin, depending on what you're putting into the bath. You shouldn't need to use an additional moisturiser unless there is a dry skin condition that's unrelated to the bath product you use. I'd stay away from supermarket brand baby washes and you can just use a vegetable oil in the bath. A jojoba or calendula oil is excellent, as it leaves a soft film on their skin and they feel so nice to touch after a bath! There is also the Gaia Baby bath and body wash that is organic and contains lavender and chamomile - doesn't strip the skin at all, and the essential oils calm baby in mind and on skin.
So, yes, there are babies who crave routine (according to a time schedule) and there are babies that don't - they just need cues and patterns, some don't even need those to be regular. There is no prescription, so play around and find what works.