Sorry, perhaps I was unclear. If you were in the minority (i.e. the group of players affected) then you would be pitching a fit if it wasn't fixed immediately. The reason they don't announce what they are fixing is so that (if it's exploitable) more people don't exploit it. Or it could be something else entirely. They are under no obligation to tell us what they are doing (although I would like to know myself).
If they had less frequent fixes and all of a sudden a rollback was required the amount of rage generated from the entire playerbase would be deafening. As it is they still have to "listen" to people whine about it every time when they are trying to fix problems.
