Board Thread:Naruto Discussions/@comment-39363905-20190717044128/@comment-9782468-20190717184251

If your theory was correct, Hashirama wouldn't have been the only known naturally occurring Wood Release user in Shinobi history. Many Uzamaki would have a shot at it.

Besides, Senju have arguably just as powerful if not more powerful life force than Uzamaki.

You need both affinities, that's it. Life force will help, but it helps everything else too