Well, obviously, it won't matter what you and I think, but it may be easy for you to be nonchalant about it since you live about 50 miles away. I don't want to assume anything, but you probably have more opportunities to visit WDW. I don't have that luxury and my whole family will be VERY disappointed if HM is closed when we visit in August. It DOES make a difference to us.
Yes, "busy-ness" is relative. The parks are always busy, but you can't tell me that there is no difference in crowd level between summer and, say, January or February. Seems like that would be a much more "user friendly" time to shut down a major attraction (imho)