It's "next man up" in season. Never did I advocate he get a raise mid-season, but when the terms of your work agreement change so dramatically, it's time to ask for a raise.
For example, years back I was given a promotion when my boss moved into a different role. It came with an okay pay bump, but the terms of what I would be doing weren't all that different than they'd been in my more junior role, I'd just be supervising some people now. Three months in, some disconnected VP decided that all of our roles needed to be integrated and combined with another department. Suddenly I was expected to learn an entirely new job on top of my new promotion. And because I was such a "rockstar," they gave me our biggest and most stressful market, and told me how great of an opportunity it was for my career. I asked not to do it. They said do it or quit.
So I walked. Simple enough, this wasn't the job I signed up for, and the pay wasn't commensurate. Even if it was, my mental health couldn't handle it (like Jacoby's physical health). That's why he deserves to get paid.