First, if you don't think not having live practices prepares a team better, you've never played football. Second, Ken already said at halftime "this is on me. I don't have our guys prepared" and took responsibility for the practice regimen. I highly doubt that it was his choice, without coercion, to practice that way-but he took responsibility regardless, because that's what leaders do.
Let's not pretend that Navy is using their practice limitations as some kind of excuse to absolve the staff of responsibility for last night's loss. That's not happening at all.