I think that's clearly a short coming from the coaches. Discipline is lacking on the offensive line especially.
Discipline as is "they are screwing around and don't care" or discipline as in "they can't get it right consistently" ?
The former is on the players - if they aren't trying hard because they dgaf, that is on them.
The latter is totally on the coaches - either the scheme is too difficult or they aren't getting taught in a way that works.
As an outsider looking in, I think it is the latter, not the former. But only someone inside would really know.