Board Thread:Naruto Discussions/@comment-26773508-20150905054531/@comment-5936871-20150906164451

LegionZero wrote: Where was it ever said only Uzumaki are "compatible"?

Also, maybe the fact that Kushina was dying and incredibly weak at the time. She would have died either by over all physical weakness at the time or Kurama forcing his way out. Nowhere. Other people are compatible as well, it's just that Kushina specifically had a special and strong type of chakra that made her well suited to be Kurama's jinchuriki, and Naruto was later stated to have inherited his mother's chakra which is why he's so compatible with Kurama as well.

@BakumatsuWarrior That still doesn't change the fact that they clearly didn't know that resealing Kurama would save Kushina's life. So it isn't a plothole, they assumed that she would die once he was resealed. Kurama is the one who told Gaara that if his other half is sealed in Naruto, Naruto will be okay. Why would Kurama tell Kushina that if Minato reseals him in her, she'll be okay? Especially when Kurama hated them all at the time and wanted to kill them? He wasn't all goody goody back then. He clearly didn't want to be sealed and thus didn't tell her.