Are you hearing that from people who have actually stayed at AKL? We have never had an issue with the buses when staying there. AKL to MK is the longest ride and on our last trip it averaged about 18 minutes from the time the doors closed at Jambo to the time they opened at MK (I looked at the clock when leaving and when arriving each time), there was 1 trip that was just over 21 minutes, but all the rest were less than 20. All the other parks and DS are not as long. As far as waiting for a bus, there is no rhyme or reason to it. All resorts can seem like they are perfect at times and all resorts can seem horrible at times. That is all luck of the draw.
From what I have seen over the years on the boards is that most people who complain about how long the travel times are or how far AKL is to everything else are coming from people who either A) have never stepped foot in AKL B) are comparing the monorail loop to AKL in getting to MK and basing things off nothing else C) occasionally those who had some pretty bad luck with the buses (which can happen anywhere) D) don't like that the vibe of the resort CAN make you FEEL LIKE you are far removed from WDW.