Syag,
I would not consider myself “newish” over here, although I may not be as OG as you, I’ve definitely been around here long enough to see the amount of anti-Chabad propaganda spewed forth on Coffeeroom by many individuals such as Yeshivishrockstar, Icemelter, and Warrior (and apparently now we have a new one) to name a few who have gotten away with it without any affront to their credibility whatsoever.
Now, of course I would generally shy away from direct insults and aggressive arguing, especially only a few days after Rosh Hashana and YK, but when the subject of the debate is such that has done so himself, and on a much worse level, to organizations and individuals, then I can assume that he’s not the type to get offended when someone else does the same thing to him. If I’ve indeed insulted anyone, then I wholeheartedly apologize.
On my part, after having seen the amount of hate over here, generally motivated by ignorance, I find it hard not to respond myself. If I only allow these factually incorrect statements to remain permanently on cyberspace without any head-on rebuttal, than this could cause a lot of damage in the long run for any subsequent visitors to the site.