Demonic style tactics is what people use when they have a point to convey and they will use any means necessary to do it.
Really! Boy, to me "demonic" suggests a lot more than simply "any means." To me "demonic" suggests
1. of, relating to, or characteristic of a demon; fiendish
2. inspired or possessed by a demon, or seemingly so
extremely evil or cruel; expressive of cruelty or befitting hell;
Moreover, "any means" includes not only spurious and fallacious means, but valid and just means as well. So exactly what "any means" are these that appear so fiendish, evil, cruel, or hellish to you? Or are you just being pejorative here?