Shorter pledge drive?

It seems so disingenuous to announce that x amount of money contributed to WUNC now will reduce the length of the "upcoming" fund drive by one day without telling listeners the starting point. I fear that WUNC is adjusting the length of time it raffles off various things depending on how much money it thinks can be raised. Candor would be a better approach. Why not tell us how many days the drive was to be, and announced that the drive is now down to a month instead of 40 days, or whatever they have in mind?