Yes. He was a BIG part of that. When you are unable to move the ball through the air efficiently and effectively, it stalls drives and overburdens the Defense. When you throw late picks, or fumble it 30 some odd times a season, it takes the wind of the sails of a D, and it forces the hand of the Offensive Coordinator to dumb it fucking down for him.
Tonyan dropped a TD in what, the first quarter? BFD, shit happens. And the Hail Mary shit is weak af. Did you even watch that game. Total shitshow, that should've NEVER come down to that.
Nobody owes Fields shit. He is simply not a great QB. Great athlete, good arm, good kid, just a below average QB.