Animosity?
I really don't hold any animosity toward people who want to reject the theory of evolution, the hypothesis of AGW, or relativity.
Just because I might wonder just how anyone in this day and age might reject basic science, that doesn't mean I dislike them. I don't even dislike people who see the world in terms of left = good, right = bad, or vice versa. I just like to point out problems with their point of view, you know, scrutinize the positions that they take.
Now, as to flawed theories, orogenicman pointed out three more.
If there are still unanswered questions about the germ theory of disease, and of course there are, are we going to treat diseases with the old remedies that were used before germ theory was established?
Would it be showing animosity to point out that someone arguing that microbes don't, in fact, cause diseases, is arguing a point that has no validity, no facts to back it up?