Board Thread:Episode Discussions/@comment-25319479-20170927100248/@comment-1512913-20170927114219

They wanted peace, yet some realize that ninja in an era of peace are almost useless. Bodyguards at most... Less reason to train and hone one's skills, less missions, less income from ninja activities... So yeah, this was touched upon in the pre-Boruto Sai arc. that there are many ninja who want things to be like they used to, because they feel useless in the current peaceful world.