Do Catholic apologists who teach evolution do so out of malice?

I do not want to pin that on them just yet, but I may soon, because it is rather obvious. Any Catholic who has read Pius XII's Humani Generis, paragraphs 16 and 17, sees that paragraph 16 lays out the red carpet and says evolution is possible, but paragraph 17 gives the problem: polygenism, multiple couples producing humans simultaneously, which is incompatible with original sin, since original sin can only come from one couple and be perpetuated to their progeny. Unless you can show how polygenism is possible in view of original sin, and unless that explanation is officially accepted by the Vatican, you as a Catholic cannot believe in evolution. So if someone covers it up by saying he has an answer to polygenism, spouting hypotheses no one has checked with scientists or theologians at the Vatican, and he knows all this, then his continued preaching of evolution is of malice. I usually give people a lot of space, but this is pretty clear, and if you do not know it, you should not even be talking on the topic, much less making decisions for everyone.