The main goal is not to score touchdowns but to end the game with more points than the opponent.

Error. You score more than your opponents by producing more TD's. IF you really believe that FG will get this team ready for 2020 and that killer schedule, then you are missing a main point of player development.

No question, coaches decide who starts, but like I have been saying IF one QB can't produce, make a change and don't wait for the game to end, make the change during the game. Real games against better teams will show issues with your offense, so make those adjustments in real time. Don't wait for a UMASS team to adjust.