Well, on the plus side, I wouldn't have to listen to you bitch anymore. :Smug:
The majority of mainstream pop is mechanically mass-produced tripe for the impatient consumer. It has no bearing on the metal community, even flower metal. I've tried to play flower metal for people who only listen to mainstream pop music, and they can't stand it. Just because it's catchy and has optimistic themes doesn't make it pop. Flower metal muscians don't have videos floating around MTV or songs blasting on mainstream FM radio. They work damn hard to make the music they make, and get shit little in return.. That's why your comparison is dumb, in my opinion.
Many people I know who listen to extreme metal argue that flower/power metal is gentler on the ear, and thus easier to listen to. This is why they don't like it, and claim that those who listen to it simply can't stand the ferocity of the music they love. I think that door swings both ways. Extreme music fans simply can't stand the more optimistic, "cleaner" approach of power metal. It's simply a matter of taste. Quit comparing it to pop music, because that's not "all it is."