Was discussing this with some friends of mine - the general response was that we didn't have a problem with the game itself, but with the fact that the game was being marketed to very young children. And that when confronted about that, the makers response was that it would be educational because it would teach the children to take care of their bimbos!
.... which should explain why some people were really pissed off about the game.
However, from looking at the website, it seems they've been bitched out a lot and may tone it down. Which I have mixed opinions on. From what I heard about the game, there wasn't anything actually wrong with the content - a brainless bimbo sim could be quite funny - just in the non-ironic way it was being presented.