I have seen it myself as well, even as an invited guest into one of these Churches, they knowing full well who I was ( a missionary) it was publicly taught that we were a cult. I think it definitely happens more in places where LDS conversions are higher. Hey, look at this very thread and the many many anti Mormon posts here, and try to imagine it not happening in places where LDS conversions are reducing numbers at some of these other Churches.
I even heard it taught on the radio one was the religion on line. They had a Rabi, Priest and a Presbyterian Minister.
it was a Sunday program in the AM and they would have a talk show and if someone called in asking about the Mormons they would tell the caller the Mormons were a Cult!