It's fair to rag on the D. There have been multiple underwhelming high draft picks, questionable coaching personnel, brutal season ending injuries and simple bad decisions...for several years.
Personally, I believe the production on Offense in 22 has allowed more flexibility on D... in the draft, in FA, in personnel contributing through multiple positions.... After JAdams went out last year, I believe the D plan reverted to just trying to field a team. I'm not making excuses. There should have been a better plan B. However, the flexibility in the DLine (quality FA additions) and backfield provides both huge opportunity in scheme as well as starter-level depth across most of the D. Add Bush and Wagner at LB and there is very good reason to expect a step change improvement at all 3 levels of the D.
It's obviously fair to have doubts. But... it's easier than it has been in a long time to see a really good D. I think it's also easy to project improvement on Offense too...added more than lost. Of course, the wheels could fall off. Oppositely, it could also be a Seahawk season to remember. To me, it seems more like the latter.