Before being a fan, everyone had to be part of the GP at some point. I didn't was born a fan of the boygroups I'm a fan of (not that I remember). I have my particular experiences, but I believe everyone went through the same path of transitioning to general public to fan in their own way with their groups.
The thing is: the group is probably so interesting to them that they prefered to become dedicated and put money on their work instead of casually listening, what is positive. And If the fandom is constantly growing, this makes even less sense, cause It means an other amount of non-fans are noticing the male group in question and joining their following each new release.
So why is what is on the title not only used as a drag, but spread as truth?