Even if you don’t care, it’s probably a good idea to at least pay attention to the announcement of a new baby, because this is a new person, who will be a significant influence on their life and may have some impact on your own. Later on, it’s considered polite to at least ask "and how’s (name of spouse) and (name of child or children, or you can say “the kids”). One isn’t expected to remember every detail, but at least acknowledge they exist.
He’s already caused children to labor by getting Roe overturned