Why? It is clear that Apple Music will replace old Music app and has nothing to do with iTunes since there will be people who want to buy music instead. iTunes Match will continue because of this. Some people will want to listen to only their own music.
I read it carefully and I think you're the one who confused. Just because Apple put curated playlists in For You doesn't mean For You = Beat's For You. You are the only one who think that despite all the explicit explanations from Apple both at keynote and on official site.
There will be curated playlists and recommendations. I'm not sure why you would think otherwise when it's so explicit in the keynotes.(I captured Apple website for you but it's so damn hard uploading photo to this site. The server is shit. Check it out yourself at apple.com)