The main problem with trolls on this forum...
...is the lack of specifics in their arguments.
Too often the trolling is very vague, ambiguous statements without much supporting evidence. Things like "that form is such c.rap...he's such an idiot because he's not doing it right!" or "he's not putting in the right flavor or intention with that movement" or "everybody knows X, Y, Z because internet blah blah blah."
Most folks are open to debate if there are specifics and explanation along with some support.