Goff played and looked bad, but so did the Patriots. The score was 3-3 with the Rams driving and they called a holding penalty on a 13 yard carry.
They never called such a penalty on the Patriots, they simply don't do that.
First quarter they kept a drive alive, calling a 15-yard Roughness when facing a 3rd and 18...but on the previous drive the Patriots had similarly blown up a "defenseless receiver" for the Rams, a guy who was actually prone from trying to dive and catch the ball.
The Rams have two of the fiercest D-lineman in the league, but their line was called for zero holding penalties in the game. If, on New England's game-winning TD drive they'd thrown a holding flag and brought back a 30-yard completion, that would have been a big deal. And those were not quick hits, they were long-developing plays, so that's not a cop-out.
If they don't flag the Rams, and DO flag the Patriots, there is a high probability the outcome is different.
As for how this "conspiracy" could be kept quiet amongst owners, mgmt and refs, well that's where the Billions of dollars comes in.
And DeflateGate really was an attempt to ease pressure or deflect from the conspiracy. There really is no other explanation for the ridiculousness of that process.