I believe he is calling assuming they CAN'T speak "properly" is the part that racist. Also, since language evolves, once the majority speaks this way, those of us speaking "properly" are the ones doing it wrong. Just saying.
Those doing it " properly " aren't necessarily doing it wrong, just traditionally. But the way people ate talking now is mainly slang, which either dies out or shapes the language. Only time will tell.
I don't see how that's racist at all. If you can speak "properly" then do so. Just like if you can walk properly, you don't use a wheelchair.
He didn't post something in a regional dialect with specific terms. He sounded like a tool and got called out for it
He didn't post something in a regional dialect with specific terms. He sounded like a tool and got called out for it