He says it's because "the prospective participants were too young and politically naive to carry it off." But I think it's more to protect the people of the world from lyrics such as these, which will be part of the song:
"When are we gonna stand up as people
Realize that as people we're all equal
We don't want no world war sequel
For the love of God think of the people."
Personally I would write a protest song in the name of stopping boy bands from writing protest songs. But I would also write a call-to-arms song in the name of stopping boy bands, period.