Ok saying the tailed beasts dont have hosts is proved wrong by the po icture itself
Or the cover could be saying that at least the tailed beasts had hosts at some point in time. Case and Point Gaara, he's not the host of the Ichibi anymore yet he's still up there as a previous host. It could also be more than likely that the 3-tails host was overcome and became the 3-tails itself. Similar to how Naruto was when he went 4TK.
Bijuu, by themselves, can't control their own power and that's why they rampage around carelessly. They aren't smart enough to use their power wisely. But when they are sealed in a Jinchuuriki, they gain someone who can use it's power better than it could on its own. The bijuu itself gains human intelligence also but thats not such an issue since its sealed anyway. This is basically what Deidara meant. Or you can take his exact words. I just expanded on it lol.
I THINK THE MANGA WOULD BE MUCH BETTER IF WE DITCHED the UCHHA AND INTRODUCED jinchurikis i can imagine naruto picking fights with each one of them shame their all dead though.
: thanks to sir Chaos
I wouldn't want Naruto to pick any more fights with the Jinchuuriki, and hear the "I'm a monster just like you" speech all over again.