Yes, I'm liking the transformation of the angelic Henry into an evil little monster. A good case study for nurture over nature imo.
Long term, he's got the makings of a difficult, troubled teen which could make for good listening in another 10 years or so. Too many of the Ambridge youth are goody-goodies. The occasional dabble with weed and older boyfriend, a few tantrums and they seem to emerge into pretty well-adjusted adults. (Except for Kate of course)
That's not the experience of most of my friends who are parents. It seems to be at least 2 years of raging hormones and rebellion per child for them.