..And it's not supposed to.
I think very often people get "homogeny" confused with "unity". Being alike is not the same as being unified, and being too alike can actually deter real unity. Certain strengths come with certain weaknesses, and this being the case, we desperately need one another to compliment each other.
I think what happens often in every kind of music, but that is certainly more obvious in "worship" arenas, is that there is a pressure to try to make a song or experience so palatable to every kind of person that we end up striping it of any real personality. So the song becomes a little interesting to everyone but isn't very interesting to anyone.
(And yes, once again what we sing/how we worship has to mean something to us. This is because God wants an expression of authenticity. He's interested in us not just mindless religious activity.)
So, if a song doesn't work across the board in every stream of Christendom, it doesn't negate the validity of a worship song.
WE'RE NOT ALL NECASARILLY SUPPOSED TO SING THE SAME SONGS!
And furthermore, where does this one size fits all, no child left behind, least common denominator, Christianity come from? For a group of people who are largely made up of western capitalists it seems to be a bit of a communist mindset. Am I crazy? (btw nothing against capitalists or communists. I prefer to stay light years away from politics in this blog.)
The fact is the whole church only agrees on about 2 things tops. And even the top guys in each stream disagree about the details. So if you want to reach the entire Christian world you are restricted to writing about those two topics and often in the blandest of terms. Even then, you're going to lose that whole segment of people that only like things that other people don't like.
You just can't please everyone, and you're not supposed to. What you are supposed to do is serve the people you've been given with every fiber of you're being.