Document effect: limiting teachers in seminaries?

Some have thought that the Vatican document prohibits gays from teaching in seminaries. As I 've said, the document really only applies (as I understand it--if I'm wrong, smart people should feel free to correct me) to men who are actively homosexual or who want to advance the homosexual agenda against the doctrine of the Church. So it shouldn't matter who the heck teaches in the seminaries, as long as they are following what the Church teaches . The whole point of seminary is to form priests. Shouldn't we make sure that they're being formed in obedience to the Magesterium and following Orthodoxy, as opposed to an agenda that isn't approved by the Church? If a seminary prof is gay and celibate and on board with what the Church teaches, then let him teach. I don't care, and I bet a lot of other Catholics don't either. I would rather have that than a heterosexual celibate priest who's so caught up in advancing his own agenda of Catholicism that he totally ignores or rejects what the Church actually teaches.