It was certainly an emotional reaction. But I think the origin for many people lies somewhere else.

When having a baby (especially the first) parents are often stressed out. Did I feed enough, did I feed to much, did I feed the wrong stuff, this and that. Thousands of people telling you what you absolutely should do to not be a bad parent, the doctors, friends, guides, newspapers, parents and so on. And you know that you can never do it all and are in reality just struggling to survive without messing your kid up.

Then when you hear about consent on changing diapers, on a baby that cannot react anyways, that for sure it the least of your concerns and you immediately think what a fking bullshit. And of course you dont have time to watch the full interview anyways, because you are busy changing diapers without consent.

On topic, I am not sure we should worry on this with our babies. It feels really pointless and artificial. You do not communicate with a baby in words, but naturally via a more emotional connection. Much more important is how you behave when the child is older and can clearly express rejection. Do you respect the choices of the child then, especially when they do not fit in your plans at all?