I've not stayed at GF; it is a beautiful resort but the theming doesn't appeal to me. I don't "hate" it, but if I'm going to pay $300/night for a hotel room, I do expect it to be ready by the promised time. Disney and GF set the bar high by their pricing--when you can get a full suite at a very upscale hotel a few miles away for the same price, it is not out of line to have very high expectations for the premium price you are paying. Motel 6 can have a room ready by the stated check-in time, so yes, I would be quite irate if GF did not. For that price I'm in an outer building, without covered walkways to the main building, in a place where it is typically raining, blistering hot, or both--as opposed to paying that price a few miles away and being in a spacious suite in the main building with an elevator.
I'm not knocking staying at GF, but you seem to take its rating a bit personally. You clearly are very happy there, and that's awesome--but when you compare the overall value to that of many other area hotels, you can't deny that for someone who doesn't place an extremely high dollar value on being on property and on the monorail, the amenities don't stack in the GF's favor. Dollar for dollar, it's not exactly the best value for those with truly deluxe expectations. Those of us willing to pay extra for the bubble know what we are paying for, but the average Disney vacationer does not--and we leave our reviews here, not TripAdvisor.