If "everything's fine" he would be practicing. He, more so then most guys on the team, actually needs these reps since he hasn't done his job since Week 4 of last season. Which leads me, and anybody else that can read through the lines, to believe that everything is not as fine as they make it sound.
If everything is in fact fine and he's just not practicing, then we have a new issues on our hand. That issue would be one of entitlement, comfort, and feeling as though your true goal (getting paid) has been accomplished.
I do not believe Dak is that type of person, but then again, getting your ankle snapped, doing all that rehab, and then getting a massive contract can probably change your outlook on things. Everyone isn't made with the mindset of a Tom Brady. Everyone doesn't have that level of competitiveness drive. Dak might be satisfied, he'd NEVER say that, but that doesn't mean he don't feel it.