Dedicated fans have the least reason to be upset other than some empathy for the original published/developer. They already know which of the two is the "real" game in the series so the name on the box shouldn't make much difference as long as they get another instalment.
Except, it isn't about the dedicated fans as much as the regular fans that don't read about this kind of stuff and will simply buy the game titled "Harvest Moon." True fans of a series want as many people as possible to enjoy their favorite franchise so the franchise continues to thrive.
I've been sharing this story with every customer at my job that seems like they would enjoy the Harvest Moon games.