It all started with TT and continued with Gute. Some poor draft picks on Defense and not so great DC's just compounded the problem. I also think that #12 was able to make up for a lot of the short comings of the offense and that gave both GM's the feeling that it was the defense that needed the most assets thrown at it and they could leave the offense to just a few additions of more minor assets.
This philosophy worked for awhile, but we saw just how bad the offense actually was without Rodgers, the few times he went down with injuries. Granted neither Hundley or Kizer were all that great, but neither of them had much success with an offense that Rodgers excelled with. We also occasionally got a peak at the offenses issues, when they seemed to struggle against superior defenses, even with Rodgers behind center. I mainly blame Gute for the TE and WR issues. TT at least brought in some really good WR's and it wasn't until they started leaving the team, one by one, that the offense slowly bogged down. Rodgers and Adams ended up serving as great smoke screens to an otherwise pretty poor receiving group for a few years. Adams leaves and the curtain was pulled back this season on the whole illusion that even Aaron Rodgers couldn't make up for lack of receiving weapons. I laugh when I think back to September, Sammy Watkins and Lazard were being taughted as the #1 and #2 WR's. Watkins didn't even finish the year.
Watching teams like the Chiefs play yesterday makes me wonder, just how good this team would have been, had Rodgers been consistently supplied with a solid group of receivers. I am pretty certain, we wouldn't be talking about Rodgers and the Packers only winning 1 Super Bowl in the last 25+ years.