The love for Weeden is somewhat comical. He had his moments in Cleveland & Dallas as well, but those moments are fleeting...particularly against good teams/defenses, which the Titans certainly aren't...even less so minus Mariota.
Interestingly, the Titans were a team that made a coaching change and drafted a QB in the 1st round. Despite both, sometimes things just don't work out...at least right away. Currently, they have the worst record in the league.
Guys like Reid & Bowles inherited pretty good rosters. Ironically, Reid wore out his welcome in Philly & now the Chipster might as well. I like Reid though, and he's done a great job this season. Similarly, Rex Ryan wore out his welcome in NY despite making 3 AFC Championship games. Harbaugh had a great run in SF...but they were 8-8 in his final season and that roster was gutted by injuries & retirements, and further hindered by Kaepernick's regression.
Minus Romo...Garrett & Linehan are simply too conservative IMO. They play by the book too much. And yes, situational game management has often escaped Garrett. This has been the perfect storm in terms of a disaster of a season...but I don't blame everything on 1 or 2 people. So many things have contributed to it.
If they made a change to a Payton, etc...so be it. Jerry's gonna do whatever Jerry wants to do.