For starters, you are not forced to farm berries. We have the luxury of having multiple different methods for earning money, so if you dislike berry farming or don't have the time for it, there are many alternatives you could try.
As far as reducing the growth time, I don't believe they should make something easier just because a few people dislike the current system. Berries have already gone down in value, if they reduce the growth time, it will just make berries even less valuable.