I don't agree with the detailed opinions of the OP, but I do agree with the message.
TS4 marketing is DEFINITELY focused on young females. It's so cutesy, so lighthearted in a childish way. The game itself isn't biased towards any gender. Anyone can do anything. The problem is that it's too childish, as many others have previously stated. The Sims used to be raunchy, with adult jokes and hidden adult things and innuendos. And overall, the game used to be harder (difficulty level).
TS4 is not only in the artstyle very cartoony. Everything is sunshine and rainbows, there are almost no negative consequences, there is no depth. It's not as much "for adults" as it is "for teens/preteens". It's a very, very shallow game compared to the previous iterations. The franchise has been around for a long time and a lot of the players have grown up with it - meaning they're older now.
The game itself isn't catering to women/young teenaged girls, but the marketing is. It depends on how you play it. But it's definitely catering to younger people - and that is what I think can get you confused and think that it's catered towards girls/women. Because to some companies, those two demographics are one and the same.