Above and beyond all of this, most new babies hate like poison to be naked and wet. They scream and flail and need lots of soothing to settle down afterwards. I don't see why you'd put a baby who's brand-new to the world through something so unsettling unless there was a compelling reason for it. I could see that some babies need to be washed, if there's risk of infection or some other real reason. But I think routine washing can wait until baby has had a chance to get settled in to the big wide world.
I never really bathed mine much until they were big enough to enjoy splashing-- about four months? I can't remember exactly. Before then, baths were a rarity and always very quick.
That said, both my girls were bathed by hospital staff right after birth, and DS about four hours later. Less than perfect situations happen, sometimes...
me , he , my three , , and -- and the one we lost