So what that they take money from United? It's their company. They also spend shit tons of money to the team every season. They just don't have competent sporting management in the club, but give lot of money to improve to the squad all the time. I mean Glazers are not giving the money per se, but they allow the club to spend a lot of money (because the club makes a lot of revenue, partly thanks to Glazers who have built the money making machine).
As much as they are mostly faceless fuckers from America, Zhangs are just simply worse because they are poor / can't hold the club.