everyone is right in a way. but naruto dosent have to be fused with all of them to be (as he is) the sage of six paths. keep in mind the sage was sage even before fusing with 10 tails.
so in order for naruto to fuse with 10 tail. bee must die and thats not gonna happen. and its not necessary cause hes gonna find peace his own way. the better way.
thats why he is the re-incarnation of the sage of six paths. the sage wanted to find a better way.but he was too old so thats why naruto beying as strong as he is at so young makes the sage(himself naruto)more powerfull then he was with 10 tails. i think the sage is gonna appear to naruto in avisson and give him the wisdom to attain his true power.