I don't think the OP is talking about the CB, that seems to be the norm around here and you are right either join in or ignore it.
I know of one thread that you are talking about, someone was talking about something they saw and was totally trashed for it and told basically to mind your own business.
Another thread the poster told a story of how her kids small kick-nacks were stolen from her stroller and how some Disney CM's replaced the stuff. The post was a reminder to all not leave stuff in the strollers and how magical it was that they replaced the stuff. She did not expect the treatment she received, she just reported it to security. People were all over her for not taking everything with her on the ride, she was stupid and Disney should not have replaced everything. The way it was written was a reminder you are still in the real world and a UNEXPECTED "Magic Moment" that she felt Disney did not have to do because she let her guard down. She was praising them for their customer service.
I guess some people have nothing to do but bash others, I've seen threads around here that are written for the sole propose of getting a reaction and they get flamed, so be it, that was the intention. When someone gets flamed unnecessarily it ticks me off and it seems to be happening alot lately.
I'm on the CB flame away I'm a Big Boy I can take it!