New Naruto headcanon: White Zetsu didn't get Wood Release from Hashirama Cells. Hashirama got Wood Release from Zetsu Cells.

For some reason Black Zetsu in his manipulations thought that if he found the next incarnation of Asura and implanted a small bit of white Zetsu in him, it would somehow help his plans. the white Zetsu fragment spread throughout Hashirama's body when he was like born or a child and mostly changed his DNA to use Wood Release, but didn't spread to his children, the zetsu implant only altering him. We know that the Zetsus existed before Hashirama did- what makes more sense? That Hashirama is born special for no reason, or that Black Zetsu secretly modified him with Zetsu cells early in life without his knowledge in hopes of kickstarting an age where it would be more possible to capture all the tailed beasts by empowering the person most likely to change the world in that direction, and predicted correctly? and that all this time, "hashirama cells" was just the most available form of Zetsu cells and no one knew it. Black Zetsu after all, admitted that he manipulated Madara into thinking that the Zetsus was his creation- why wouldn't he manipulate Hashirama into thinking that the Wood Release he had was his kekkei genkai? A kekkei genkai that his clan didn't have before or after him?