Given that I first read the terms "trip generation" and "route assignment" when I was in high school, and in reference to SimCity, I think we can safely assume

Given that I first read the terms "trip generation" and "route assignment" when I was in high school, and in reference to SimCity, I think we can safely assume that the problem is actually the recommendation. There's some legal precedent* in blocking unlicensed people from making recommendations, notably pertaining to legal advice given by people who are not members of the bar association. On the other hand, Will Wright could clearly not be held liable if some loony city planner tested his designs out in SimCity. Also, individuals are generally permitted to represent their own interests with legal argumentation, and this guy is apparently someone with an interest. * -- Ironic though it is given the subject matter, I am not a lawyer, this is not legal advice.