Of course you wouldn't.
Your framing is also extremely silly. Most clubs have a history of failure of some sort, Newcastle have had a challenging recent history, but they're a massive club with massive support and you shouldn't just dismiss them, its pretty disrespectful.
You could also frame it as he's approaching the twilight of his career where his contact is expiring, there's no guarantee how much he'd play and what the nature of his new contract would be, he's moving closer to his family and gets work with a manager who gave him his big break. He's also getting in on the ground floor of this project. For an English player winning the PL must be the height of their club aspirations and whilst Newcastle might not be likely to win it before he retires, its the best chance he has available to him now.
I get you don't like Newcastle and their regime, but this whole "professional players shouldn't be interested in their earning potential" is naive and seemingly only reserved for footballers.