I think we're all seeing something happening the same. The offense has become "stale," to quote a term that might fit.
If it's "McCarthy's offense," and all the coordinators and offensive assistants follow the "blue print as shown," they can only follow the lines defined on paper, which in this case would be the routes, formations, and just about everything else related to our offense.
Even my wife watches the game and can tell pretty much what every play will be when it comes to pass or run, and can also guess it right 75% of the time as to where the run or pass will be thrown.
Where we have been fortunate over the early years with Rodgers is that he is so good he's been able to thread the needle, even to guys in double coverage. As his legs age, and his arm becomes a little less elastic, the throws take longer, and that 1/20th of a second he has to make that decision is gone, and he has to look to a more conventional connection.
I'm not throwing Rodgers under the bus. I'm saying that Bum Phillips said it best; "Coaches are hired to be fired!" When asked to explain it, he said exactly what you guys are actually saying in your own way.
The defenses in the league have caught on to the arc of calls and formations the Packers use on offense. It's time that they modify their WCO, and go to counter measures that stop teams from being as confident as they are, when it comes to defending against our offense.
I remember when Holmgren found teams cheating in with 8 in the box, he'd pass over the middle to TEs on quick slants, and short crossing routes from the WRs. He also found ways to get the RBs out of the backfield into the flats for screens against bull rushes. These were all calls based on player packages on the field, and the QB making the changes, so defenses couldn't be over confident.
I also believe that the Capers defensive schemes have run their course. I see a lot of teams playing a more hybrid version of the 3-4, and getting better results. It starts by having a huge safety type player controlling the middle of the field when it comes to passes, not a huge LB who can't match up in speed.