If we don't have a backup plan then I would hope/choose to believe that they saw enough in Montez's game this spring to trust him as a backup (or starter if Sefo can't go). It's a more logical assumption than negligence.
I'm not so worried about 2016. I'm worried about there being no viable competition or QB2 in 2017 unless someone is brought in. I don't want to go into 2017 putting everything on Montez being the man and then hoping he's healthy for every snap of every game.