My expectations are low to begin with.
To remind you, he had 3.5 last year and is 32 years old.
Speculation
This may surprise you to learn but the team is rebuilding.
You and I agree on many things. This isn't one of them.
We all know sacks aren't the only thing used to rate a linebacker. It isn't really even the most important thing. I'll take hurries, hits, amount of times double-teamed, etc, etc, any day. Plucking out 3.5 sacks in an injury shortened season isn't really representative of what Judon brings.
Guys are playing longer. I don't think we would have regretted signing Judon to a 3 year deal. Instead it appears all that $$$ will just help Kraft buy another boat.
As for rebuilding, it's hard for me to get on board with this right now. Is there an actual plan in place? It doesn't seem that way right now, or if there is it isn't one the Pats will fully commit to.
We know this is no longer a destination. The coaching room is new, the championship culture is gone, the weather sucks, the taxes and cost of living are sky high. As much as I love Boston, it doesn't quite hold the same allure for guys in their 20s looking for stuff to do.
The Pats have shown they have some interest in improving talent at the skill positions by making a bid on Ridley. But they won't go all the way. Because of all the reasons above, they are going to have to overpay to get real players in here. They aren't willing to do that. Now they are letting the defense fall apart as well.
So what is the rebuild plan? Until it becomes obvious, and they show a true commitment to it, it's hard to sit back and be patient.