It's a basic adage of football that strength in one area generally means weakness in another, and this can be found at multiple levels.
Teams with a good offense often have a bad defense, and vice versa. Defenses with a strong front 7 often have a weak backfield. Offenses with a QB and good linemen often skimp out on the skill positions.
It doesn't take the best player in football at each position to be the #1 defense or offense. But it does take talent and a comprehensive plan.
Similarly, striking the right balance teamwide (and invariably, a whole lot of luck) is what makes a Super Bowl champion in the salary cap era.
So, to McDermott's credit, I actually think this defense is designed to be complimentary with the offense.
Afaik, the Bills still run a variation of the EP offense. That's the offense the Patriots used in the Tom Brady era. Idk how many of you guys have noticed this, but the way the Bills "possess" the ball reminds me so much of the Patriots games during the draught years. It's exactly how I remember the Patriot offenses being, and how quickly we'd go three and out without even using 30 seconds, and how badly they would kill us in time of possession and gas our defense.
But today, the Bills are very good at the time of possession game imo. Allen is always watching the game clock and taking his time with every snap. The coaches and the players understand the importance of possessing the ball with a potent offense. If you're likely to score anyway, it's better to take 8 minutes to score than 2 minutes (sorry 90s Bills!).
Joe Brady and Allen have both said they'd like to be a physical, run-oriented offense... and I think a big reason for that is their overall philosophy as a team and how that can complement the defense.
A ball control offense that is potent puts several dimensions of pressure on the opponent. Your defense is fresher. Their defense is more gassed. They have to contend with both the scoreboard and the game clock when playing from behind. They know that even if they counter-score, your potent offense is likely to chew up clock again on their way to another score.
All that pressure changes the way an opposing offense has to play to keep up. The pressure isn't just on them to score, it's also to score fast. That affects play calling and puts mental pressure on a QB. And it's that pressure that feeds back directly into the way the Bills play defense.
Even with the ghastly run defense we've seen through 4 games, the Bills are still 17th in scoring defense. Even with all the missed tackles, gang tackling means that chunk running yards still won't match chunk passing yards when the pressure is on. I know it's kinda true around the league that everyone runs 3 corners as a "base" defense, but McDermott has run a base 4-2-5 defense since his arrival and rather overtly by comparison.
And again I think that's by design. The Bills go all-in against the pass and plan for defending against big plays, because the way they run their offense feeds into creating a big-play desire in their opponents.
So no, I don't think Babich is in the hot seat as long as the offense continues to do its part. Tackling aside, I think everything is going according to the big-picture plan, and 4-0 is my proof.