you've definitely tainted the reputation of SDC by taking away all perception of professionalism associated with the coin.
I think child went a bit overboard with trying to prove everyone wrong and bait them into getting nasty (although it was initially a good question about the InstantTX) but to say he, one lone person, tainted SDC's reputation is silly. It is nothing compare to the amount of troll spam that XC got in its early days last year from Dark holders and I wouldn't say the endless amount of Darkcoin sock accounts on twitter are indicative of the community, no?
This is like pro sports, every team is going to have their legion of hardcore supporters who love to piss off the other side, well just because.
The QA he asked was right.
His approach after that was annoying. All he wanted to message was "Oh, so you are not as good as my "bag of wonderful coins"