One of the biggest reasons football is such a fun sport to debate is that the 11 players on the field for each team is the most of any major sport. It is very hard over one viewing to assign blame and give praise properly, especially considering the play designs, calls and formations while doing so. It leads people to easily shrug off counter points in debates, saying a player was helped or hurt by the players around him. This is applied almost specifically to quarterbacks.
What stuck out when digging into the background of Mitchell Trubisky is the amount of help he had at North Carolina.