I also wonder if some of the kids who are "reading" HP in K, as discussed disparagingly there, are mostly being read it and sometimes reading a few pages solo. I know a lot of parents who've done it that way and I don't see a particular issue, though it's not really a case "Look--he's reading HP." This might explain a child whose precocity isn't as much so in later years. Perhaps the parents exaggerated it. That's much more believable to me than the child basically "faking" reading comp he/she doesn't have.
I don't mean to be a huge jerk, but I will note the age of the author's kids--4 and 18 months, was it? She may be a teacher, but her own children are not (probably-- I imagine the 4yo would be encouraged to stop if he/she did read!) of reading age yet and she doesn't have the understanding of what it is to have one's own child reader and how this process can evolve in the home.
