It's just classism from Morrissey. Like I said before, millions of British working class people, of all ethnicities, speak like Khan, who grew up in a working class family. When he insults one, he insults the rest of us.
Maybe it's some internalised self-hatred on Morrissey's part, considering his social background and upbringing? I get the impression he always thought he was better than his fellow working class peers. That isn't necessarily a bad thing, as I'm sure many people who come from working class backgrounds want something better for themselves, but he could do well to remember where he came from.