He's not alone. Step forward Ratboy. Preaching from his pulpit at Sly, telling the plastics everything is the fault of the Glazers: inciting hatred and trying to provoke them all into action with his limp, totally baseless rhetoric. And this appears to be condoned by the suits at Sly, thereby encouraging the spread of malicious lies and falsehoods.
Their plastic followers may be unhappy with the Glazer family and the way the club is being run, but that doesn't give any ex-player the right to appoint himself their unofficial spokesman and use his position at Sly to publicly condemn the owners.