Seriously, who are you to determine what is a "legitimate" complaint ?
Who are you to know what will make a trip magical for another family, or a trip crappy for another family ?
For MANY people, these are once in a life time trips, being shut out of some the the things that appeal most to a family can make a huge difference between an awesome once in a lifetime trip and a disappointing trip which ends up becoming more and more sour given the sacrifices they made to try and give their family the "perfect" trip.
Its Ironic that you say, quite clearly, you can post whatever you want, and I agree, where so many people have chimed in here how they just wish people wouldn't complain and would just go somewhere else instead ... and yet they find it perfectly ok to just complain about people complaining.
Its ironic that PPs have said "if you don't like the positive comment threads why did you come in here" and yet .... you could just ask them, complaining about negative threads (like yourself) "why don't you just not look at negative threads" ???
Its ironic that you say its all about a positive attitude, that a trip is only what you make it, and yet, you go to disney, and talk about the magic of disney, as if it isn't something disney is doing which allows you to feel that way ... why go there, its not the cheapest, its not the most efficient trip ... go somewhere else and "make" that what you want with your attitude. The reality is there is something material that disney does and offers which is special, as they cut back, its totally normal to see your enjoyment being cut back as well.
Its ironic, extremely ironic, that PPs have defended Disney as a corporation doing things that benefit them, that profit them, and yet they are calling down people who complain who are acting as smart consumers. So its ok for a corporation to be a smart corporation and increase its bottom line, but its not ok for consumers to be smart consumers and insist they continue to get the same (or more) value for their dollar ?