If Rodgers doesn't come back in my opinion it makes sense to move on from Z, Preston, Cobb, Turner, Lowry, Crosby and Lewis this offseason as well as Bakhtiari and Jones next year while not re-signing any of the free agents that will take a significant amount of money to do so. In my opinion that should be considered a complete rebuild.
First of all I don't think the Packers have an elite defense to begin with. In addition the offense without Rodgers and Adams would struggle mightily, making it all but guaranteed they won't get anywhere near winning 10 games in 2022.
The Packers are 6-11-1 in games Rodgers hasn't started in since 2008. Those teams had more talent that one that would be in a rebuild mode next season though.
The Packers would most likely build around a core of players on defense in Alexander, Clark, Gary and Stokes but aside of Jenkins the offense doesn't feature any player to do the same on offense though.
I don't think the Packers should either pursue Carr or Tannehill to replace Rodgers.
I do tend to think that we should go with Love if Rodgers leaves as well, unless it is a superstar QB, which is not going to happen. He has way more upside and many more years if he turns out to be good. Especially if it is someone like Tannehill, Wentz, or Garoppolo. I do think that Carr is a very underrated QB though, he has played on some bad teams. I have just heard this mentioned as a possibility regarding the Aaron Rodgers trade rumors.
As far as the Packers going 6-11-1 in games Rodgers hasn't started since 2008, even though I don't expect the team to do good if Love plays like most rookie QBs his first season or two, I do think that the franchise is in a much better place than it was that time Rodgers was injured and we had to start Brett Hundley. I think the team is more talented with the exception of the WR corps (assuming we keep the core of the team intact), especially on defense. Plus, I think the offense is built much better and has a better scheme that is more QB friendly under MFL.
I don't think that we are going to need a superstar QB, while it is nice to have and it certainly helps, to win in the future with the type of offensive scheme that MLF runs, the offensive line, and running game, if the defense can keep up the level of play from last year into Joe Barry's tenure (and get better on the d-line and at ILB).
With all of that being said, I am not eager to move on from Rodgers unless we are at a point were keeping him would force us to blow the team up in a couple of years due to the salary cap (and I have heard conflicting reports as to whether this is true or not).