It's to the point where there is just no defense left for Ireland. He can't blame injuries, he can't blame a lack of resources (draft picks and cap space) for the o-line's issues, the writing was on the wall all offseason and he ignored it. I wanted to give him one more shot as I do believe he has improved somewhat post-Parcells but it's to the point now where his incompetency is shackling the entire team and making whatever good he has done irrelevant.
Bringing in McKinnie at this point is such a desperation "band-aid over a Gronk'd up forearm" move it's just sad. Again, it has nothing to do with injuries, it has to do with incompetency from the starters that Ireland had faith in (particularly the tackles).
Of course, there is plenty more blame to go around. Coyle's defense has somehow gotten worse after last season, even with supposed personnel upgrades, Sherman's play-calling has killed the team's momentum at crucial times, Tannehill has started regressing in areas like decision making and poise in the pocket after a solid start, Wallace has underwhelmed, and on and on it goes.
All of that said, if the o-line somehow improves with McKinnie this team could still make the playoffs. They've had one clear win, one clear loss, and four games that could have easily gone either way. The good teams finish the close games, and that is the biggest thing that's changed from 3-0 to 3-3.
The good news is my optimism has been completely broken after that gut-wrenching Bills game so more losses will just be facepalm inducing instead of rage inducing. Yaaaaaaaaaay.