The other solution is to stop publishing biographies of living persons, or at least to offer subjects deletion on request.
By hosting living bios, and by inviting anyone in the world to edit them, we're encouraging bad editing in a quantity we have no hope of controlling.
That would leave a major hole in our coverage. There has been talk of deleting articles about people that are only slightly notable at their request, but that just results in arbitrary definitions of how notable you have to be to not be allowed to have your article removed.