Many of the wild ideas come from people with sketchy memories. This is especially true of the Orlando area where visual and mental stimulation is very, very high. Places and times get mixed up in our minds. Memories overlap and sometimes, even as adults, our minds picture things that we never really see, just more what we would like to have seen. Another factor are things like these boards. Although they can be enormously helpful when read and understood, there are so many sarcastic or just someone trying to be humorous, posting incorrect information that if someone isn't really savvy to it all, can be accidentally taken as truth.
The biggest fault is people that insist that the parks have declined from what they were like when they visited as a child. Things have changed and that sometimes is looked at as decline. It's not what we expected to see and it offends our senses.
I can be as critical as anyone here over things that are stupid, but I am thankful that I never visited the place until I was in my mid 30's. I feel that I saw it for real, and not enveloped and influenced by the visual explosion that WDW or DL are. Bright lights, continuous sounds, continuous activity can easily make an impression that is anything but accurate. Remember that Disney deals in fantasy and illusion. Not everything is how we see it from that viewpoint. To me, people that are negative about the place on a general basis, are still in child format. It isn't what they remember and instead of seeing the possible improvement, they see it as a fail.
How's that for pedantic?