Who cares ? As long as it tastes like coffee, it's coffee allright. Coffee should naturally be bitter, otherwise it's not coffee, but sugar.
Bedugul Coffee "looks" like cocoa powder, the colour is brownish rather than black. I always presumed that Bali coffee would taste like Lampung (Sumatra) coffee. But then, Lampung coffee and Medan (Mandhailing) coffee are different, even though both comes from Sumatra.
Now you can imagine the coffee of Bali. It's roasted on a wood stove fireplace. It tastes different. Better !