I have had my fair share of difficult clients...but hey, you deal with it. I am sure there are many clients who might say they have had their fair share of difficult freelancers. We might all be irate regarding such a situation at a certain time. We may ask for advice, some might give advice. Others may sympathise and offer comfort, of some sort.
However, you can never blame EVERYone for the possible mistake of an individual. Or make allegations, left right and centre. It's just not kosher.
Sounds like someone just dealt with the client from hell.
It's really great that we work through the Internets and we get to walk away before answering. Even have that backspace key. I've had a few times where I take like 2 hours to respond because I keep telling myself that I have to keep my cool. lol