The article says "newborns", not generically babies. Newborns don't have language, memory or plans, and can't really see or control their bodies. I'm not sure how you would prove that they're conscious.
https://theconversation.com/babies-can-learn-language-sounds...
https://www.monoglotanxiety.com/blog/sciene-of-language-newb...
https://www.aaas.org/news/babies-brains-are-primed-their-nat...
I could go on for each of your claims but this should suffice to make a curious person want to revisit their assumptions. Each one touches not only on speech but memory.
You moved the goalpost in your second comment, so I am not going to consider you worth engaging beyond that - you're clearly a bad faith arguer.
By most cognitive measures, an adult mouse is probably more conscious than a newborn.