Yes ... and no. I see your point, and I can understand your point of view.
That being said, most players (including myself) find her most appealing & ignore most other characters. I know I do, which is one of the two reasons why I love AP. Now, I'm not a patreon member so I can't really speak on my behalf but those who are seem to share more or less the same (or at least similar) opinion. And since their opinion matters the most, they have the final word on character development.
Still, if it were up to me, I'd love to see various characters & more story development. I'm not against that idea, but I also understand why Maddie gets more attention than Sam, Jazz & other younger girls.