Uhm, what exactly changed from last season to make anyone think the defense would be any better? Gute didn't bring in any veteran help and the new DC that MLF picked has been terrible everywhere else. People expecting material improvement were just basing that hope on, well, hope.
That being said, the defense we saw against the Saints was not the bad defense was last year, that was a truly awful defense that showcased terrible communication, a level of decline by the DEs that I didn't was possible (foolishly I thought "how much worse could they be?"), and evidence that the DC is as bad as most thought.
Kenny Clark is showing signs of decline because he's basically been playing 1-on-5 his entire career and the guy Gute brought in to play ILB (Campbell) looked like the 55th highest paid ILB in the NFL.
The Saints will be a good team, I think people watched Brees leave and forgot that Brees was actually not a good QB last year and the Saints still have the 2nd best RB in the NFL and a top-2 offensive coach in the NFL. Did I think the Packers defense would look like Bowling Green? No, but then again I didn't count on Kevin King picking up right where he left off against the Bucs, a terrible DC doing a terrible job preparing the team, an injured Z being limited to 19 snaps, and a dline that looks like it might be contention for worst in the NFL (if Clark can't recapture his 2019 form).