Board Thread:Theories and Speculation/@comment-35057921-20200304230629/@comment-24824859-20200305004325

Kabuto not integrating the DNA of all the shinobi he resurrected is not a plot hole. It's simply an unexplained event. It might be because he's compatible with only DNA of those he integrated in himself or that he is only familiar with the techniques of said people. But, this technique does have the potential to be absolutely broken.