I saw the whole diaperless thing. I've raised 7 kids, and I know that babies DO give signs that they need to pee or poop. Problem is, that they do so AS they are going, or just SECONDS before. No time to whip ANYTHING off and put a baby over anything. I also know from observing and training kids, that it takes many many months to train an infant to anything. That time shortens with age, but it seems pretty logical that a baby would have no useful bowel control until they were close to a year or more old. Up to that time, they might be able to release their sphincter muscles to pass urine on demand (if they had a full enough bladder), but they would not have the control to restrain if they had to go, nor would they have the ability to void their bowels on command or to restrain it if they had to go.
So not only is it just training the parent, it is requiring the parent to keep up a VERY demanding task requirement.
Newborns pee every 5-10 minutes. It is about every half hour by 3-4 months. If you have ever had to do something every 5-10 minutes, which requires your full attention and monitoring, you'll know what it would involve to not use diapers with a newborn. Basically, you'd be holding the baby over the toilet 24-7. Otherwise, you would have to develop a VERY casual attitude about getting wet on.
Many of the parents doing this let the baby go half naked most of the time - no undies, just a shirt and legwarmers. They do that for just the reason of time - either you jump fast and plop that baby on the toilet immediately, or you don't catch it. No time to take off clothes. But not appropriate attire for public appearances either! Besides which, I don't think I want to train my child to be half naked because training a child to WEAR clothes can be just as hard as training them to use a toilet later!
I just don't see that as being a practical option for our life. I mean, you can't really take a baby to the pot every time they have to go when it takes half an hour to drive to the store (stopping the car, unbuckling the baby, undressing it and sticking a bowl under it would be too slow to do any good by the time you got it all done), when you are IN the store for an hour or more (impractical there, to say the least), when church is 3 hours long (can't you just see whipping out the potty in the middle of the invocation), and when the rest of the time you have to juggle childcare with a web business or farm. Just seems entirely unmanageable for me since I have other children and duties which also require my attention.
I did find this:
https://www.babybunz.com/Niji-Cotton.html
Big problem is they are SO expensive. And I don't see a way to make them myself, because they are a waterproofed cotton.
Some types of waterproofing will definitely be a problem, due to the chemicals used. Other types are less of a problem.
I thought perhaps the infant training pants that the diaperless people use might be useful as a diaper cover also, as an alternative to the old time soaker. What I don't like about that option is that I'd pretty much have to double diaper by the time the baby was a few months old, and that is just so bulky and HOT in a warm climate. Heat rash on the butt is no more fun than an allergic rash.