That is a nasty ugly thing to say to about anyone. And pretty much on the same level as the accused, I would say. Even if some people have no regard for others it does not mean you have to sink to their level. Seems like you have found more than enough ammo to blast him away scientifically, and often hilariously so, no need to resort to this kind of ugliness.
It all sounds swell with one exception:
You need to develop a snazzier posting style -- say, writing everything in pig Latin or perhaps adopting a more Yodaish sentence structure.
(Liking this idea, am I, mmmmm?)