I don't think bass fishermen came to be because of cross-breeding... hmmmm... why do I think the Trout Master is setting me up with this one.

I think bass fishermen came to be because they haven't evolved far enough to become trout fishermen.

One starts with catfish, then progresses to bluegills and bass, and then on to trout. Eventually they also learn the limber rod is the proper way to angle for trout.