What would happen in today's game if you had a new rookie on your team named Warren Spahn and you were the manager?
Warren pitched more than 240 innings for 17 consecutive seasons and recorded 382 complete games. He also pitched effectively well into his 40s and never had Tommy John surgery.
After seven innings, if he told me he was okay, I would probably ignore the pitch count. Wouldn't you?
I also think there is an ample supply of relief pitchers capable of pitching two innings. With 7-8 one inning wonders in today's bullpens, there are over 200 candidates.