It could be we just hit a bad time for transportation (although I have read reports of others that so many resorts shared and it being bad) and that's why my response to anyone asking about the buses at the Epcot resorts is that it can be hit or miss. I have read a lot of responses to other threads asking about YC/BC transportation and some responses seem to say that during slower times, the buses "could" share among all 5 resorts, but during busy times, it's only between YC & BC. So, IMO, there's really no telling how the buses will be until you get there as everyone has a different experience (i.e., our busy time was shared among all 5 resorts and not just shared between the two even though it was a busy time).
This is entirely your opinion and not fact as you make it appear. Some of us have experienced "nightmarish" bus service at the BC/YC. Does that mean the buses are horrible every day, 24 hours a day, 365 days a year? No.....but they also are not the best all of that time, either. We were there during a busy time and although I have read a lot of responses in the past that said the buses were only shared among all 5 resorts during slow times and went between the BC/YC during busy periods, that wasn't the case during our trip. The buses serviced all 5 resorts the whole week we were there, which was during a busy time. Also, we have had much better bus service at other resorts compared to the BC, so in our experience, yes, there are other resorts out there that do have better transportation than the BC.