The O.P. reminds me of the kid throwing a tantrum lying on the floor kicking his feet next to the supermarket checkout because mummy has just told him she's not buying the sweets he's grabbed . . . .
I had a similar vision. The fact that they used the word "attacked" speaks volumes. "Challenged" would be as far as I would have gone ... but, then, if you're going to offer a technical criticism in a forum with technical members, you better expect some dialogue - and some differing views.
As I see it, the dummy spit/tantrum simply means they are closed to the possibility that they might not have all the facts and/or their understanding is lacking. IMHO, such people are simply demonstrating their own ignorance and insecurities - and are going to have a hard time learning.
... and they are going to alienate themselves from the very community that could provide the greatest benefit.