Yes, but The System has worked in the few games Brady hasn't played since he became the starter. Obviously we'll see if The System works long term without Brady, but it can't be denied that Brady has been aging and isn't what he once was. I don't blame Brady for wanting one last big payday, I don't blame BB for wanting to move on, and I don't blame Kraft for not interfering with Belichick to keep Brady here.
We're all processing this differently. If it makes you (not YOU, everyone) feel better to blame Brady/BB/Kraft for this and call them names, go ahead. This is definitely the place to do it, and much better than crapping on Brady on his social media.
Me, I'm living in the reality that Tom Brady isn't our QB anymore. I love the guy, but he chose not to be here, and I'm not switching fandom. So I could be bitter and blame Brady, or blame BB/Kraft and actively cheer against the team I am a fan of. I don't want to do either. In BB I trust, and it should be interesting to see what happens come September. If Brady makes it to the Super Bowl and it's not against us, I'll cheer for him. But I am, first and foremost, a Patriots fan.