The defense allowed nothing, but then gave up the game winning drive. They suck too, imoYes, everyone on the team could've been a little better and the Jets would've won. And so you can say that there's enough blame to go around. However:
The defense only gave up 13 points and 3 were off of a turnover.
The Lions only scored 20 points.
Outside of Braden Mann not kicking inside the 20 and punt return coverage, this loss was entirely the offense's fault.