As usual, these videos, while good, miss several important points which I am thus forced to address.
First, these so-called experts are confusing two separate things: consent, as properly defined, and respectful parenting.
Of course it's a good idea, depending on your child, to let them know in a considerate way it's time for a diaper change. With the same qualifier in place, it's also a good idea to talk to them about what's happening on the changing table as well as, when they're older, get them involved in their care. However, as was rightly pointed out in the above videos, a baby, by its very nature, can't consent to anything. A baby doesn't even know what's good for it, which is why it requires mom and dad for every single need.
Besides, most parents, if not all these days, wouldn't just grab the child up and throw them on the changing table, with the possible exception of an extreme blowout emergency. Rather, they would do exactly as I outlined above.
I also assume, despite the modern disposable diapers that work really too well, that most babies still fuss or cry when wet or poopy and/or communicate in some other way, including verbally when they attain that skill, that it's time for a fresh dipe.
In the grand scheme of things, babies quickly come to trust their parents and other primary caregivers (relatives, friends, etc.) to take care of this and all their other needs. If a baby isn't communicating it's mandatory desire for a new wearable toilet, it may very well be that the little one has gotten to know the older folks in its life will take care of this in a timely manner, no "consent" communication needed.
