Quarterback play falls into three categories: the stars, the strugglers, and the mediocre. Being stuck in QB purgatory is the worst space for a team. The Giants overpaid for Daniel Jones due to lack of better options. Some QBs leave teams muddled in mediocrity without ever reaching elite status.
Happy endings in QB purgatory are rare but possible. Only a few QBs have won a Super Bowl after failing to reach a conference championship game through their first six seasons. The key could be a strong defense or the stars aligning just right.