The benching of Butler happed at the END of the 2017 season.
THEN THEY WON THE SUPER BOWL IN 2028.
They covered that in episode 10. If it was a huge issue, it certainly didn't impact their performance.
The Guerrero issue was huge because Kraft undermined Belichick in front of the entire team and it pissed Belichick off so much that itit created the tension player's talked about. Why else do you think Belichick was pissed that year? What other reason could he have?
Even Amendola understood and articulated why the Guerrero issue was a thing.
Let's face it, Guerrero is a "very close" personal friend of Brady's. And by very close, I mean from Guerrero's perspective, he certainly utters some unbelievably bizarre things about manipulating Brady's body. Did you miss that? If you think this wasn't a huge story, you totally missed the major story of the episodes.
If the team was pissed at Belichick because of Butler, they proceeded to... WIN THE SUPER BOWL.
Slater made that perfectly clear.