I agree. They have a business account for posting these. He didn’t have to promote them on his personal account.I totally agree with you that it does not say a lot about his father qualities & IF that would be the reason that would be great, however I don‘t think that‘s the reason.
The fact that he puts out „content“ like that in the most important days of a new family still says a lot … he could just kept quite, too. Also they made the pregnancy, gender etc very public so it would be weird to just stop posting … we will see.