Hey! Please leave us Mormons out of this. We are not Protestants, nor are we a party to squabbles between Protestants and Catholics.
That said, the posted article appears to be a hit piece on Protestants, not a serious discussion of Christianity or Islam. I see far too many articles on the Religion Forum that are intended to defame and insult rather than inform. This one happens to attack Protestants; others attack Catholics, Mormons, Jehovah's Witnesses, and so on. Enough is enough.
Actually, I didn't think it was a hit piece, but I thought it raised a couple of interesting questions (although I do not think that Protestantism is descended from Islam). Hit pieces are the things with the inflammatory titles practically saying Whore of Babylon that some Protestants have been posting here lately.
That said, however, I do have some questions about Mormonism. To me, it is very similar to Islam in that it is derived from Christianity and Judaism but is an individual's private "revelation." It is quite syncretic and includes bits of Christianity, bits of what Joseph Smith or his followers believed to be OT law, and bits of 19th century spiritualism. How do Mormons explain this?