You ignore him and demand from the rest to ignore him too, because you think he's a troll. You're suddenly sounding like franky. If you want to shut him up, better do it with arguments. This is the hard way, I know, but it turns out it's the only way. Ban requests or ignorance will do more harm than good.

The fact that we've made 11 pages in this thread and another 5 on my ban request proves that this case isn't simple.