I often wonder why these articles even get "published". I get that it's "tongue in cheek" (hopefully, anyway). The crew is not going to magically come up with a meal for you because you claim your child is a "celebrity".
I was on a flight out of IAH Monday and there was a little girl there wearing a sash that read, "Miss Washington Princess". She was juggling two of those ridiculous oversized rhinestone crowns (if you are a Toddlers & Tiaras fan, you know what I'm talking about) , until Mom finally pinned one in her hair. Seemed uncomfortable and a bit over-the-top for a flight that was leaving at 10:30 p.m.
No one spoke to her, or gave her a second glance. She was not upgraded to First. If someone told me their child was flying to be in a movie, I could care less. Dumb.
Haha, I loved the idea of projecting your about-to-be-famous kid, except for the fact that most would ignore (and so do I). That's about it.
The earlier article was a nice read -- our society is comprised of various temperaments, from infants to whining grandparents, and everything in between. It definitely helps to build more patience for the toddler in your next seat without getting too much irked about it. Parents should also be less worried about their kid's (mis)behavior -- hey, any kid is going to be upset when jailed in a metal tube for hours (try doing that at home, and you'll know). Societal norms are different across different cultures - where some places accept slapping a kid for misbehavior, some might jail the parents on child-abuse clauses.
So just relax - keep your cultural conventions in the bucket, and don't worry too much - both for parents and co-passengers. And you'll enjoy the flight!