That sounds awful and should never happen.
It also demonstrates that incivility can happen on any topic.
I have found the harshest and meanest and most "personal" attacks come from the more established members, which was surprising at first.
But then, human nature I suppose. People that have been involved with something longer than others, think by default that their opinion/knowledge is somehow "better" and worth more. And you can see that everywhere in life.
Purely from a sociological point of view, forum like this are fascinating because they do, in fact, mirror real life!
With a forum like this, for example, whether you have posted 10 or 10,000 times, whether you have flows 10 or 1000 times, at the end of the day, 99% of stuff written is just an opinion. Sure, if someone has flown the world's top 10 airlines in F more than 10 times each, then that person's opinion is certainly going to be more "informed", but still an opinion, none the less.
Take QF F, for example. I don't like it. I don't like the layout. I don't like the decor. I don't like the colour scheme (it is too clinical for me - I feel like I am going in for surgery). In my opinion, I will never rate it higher than EK or CX or JL. But that is just my opinion. My boss, who routinely flies EK/QF F to LHR, often has QF one leg, EK another (esp when was via DXB). He HATED EK - he hated the "gaudiness" of the gold and fake wood and all of that. It was like we were speaking different languages! But there you are - an opinion no less, neither right or wrong.