If JG threw at or above the SEC average number of attempts in 2018, 346, he most likely would not have maintained his low interception numbers or his QB rating. Has nothing to do with 2019, he's got an entire off season to try and improve, but he ends 2019 with <250 attempts, then he'll most likely have similarly low passing TDs, and we'll have won a similar number of games, and just like in 2018 his QB rating and his low number of interceptions still won't have mattered as far as the success of the team is concerned.
In spite of JG's stats we were
121st in total offense, only ran 716 plays, 3906 total offensive yards, averaged 330 YPG. QB-play has more affect on the game than any other position on the field, and it's a good part of the reason that our offense was stagnant in most games during the 2018 season.