Better move by a mile, miles and miles even.
All what you have said is a negative spin on why the club may make the signing, you are not wrong....its a business model that works for them, or they see as working, thats football these days, he is an investment for low ralative cost.
HE has not chose the move because of that, he has chose it for all the good things you pick a massive modern football club.
Trophies, Champions league, surrounded by International players....he grew up at the same acad as Cole Palmer, huge media attention, massive stage, and huge money with long contract, England chances just improved instantly.
If it does not work out, so what...he took his chance....and will then get a move to us or a west ham.