"Hoodlum lingo"... Reminds me a bit of something a random thought I had: How would you feel if you were constantly told your manner of speech was "wrong" and you constantly felt pressured not to use it? Would it be OK for Australian employees to be pressured to not speak Australian English, since it's indisputably in many ways different from "Standard English"? (whatever that is) Of course not, right? To the contrary…
Bad example. Here in Australia, I call my mate a cunt all the time. But if my mate and I worked as store cashiers in the US, we'd be expected to refrain from doing that. Or we would have to look for new jobs in short order. And that's fine.
The point is, no one would say it's OK to pressure speakers to not speak Australian English.
And not only are they not stigmatized the way AAVE speakers are, in addition to that, it's kind of expected that people who work with Australians make an effort to get used to and understand the Australian variety of English.
That certainly isn't the expectation for AAVE - with AAVE, it's them who should make the effort to speak like everyone else, not anyone else making an effort to get used to and understand them.
Even those who speak perfectly grammatical Standard American English, but with an African American accent only, are still stigmatized. So it's not enough for speakers to speak grammatical Standard American English, they have to completely change they way they speak in order not to be stigmatized.
This is very revealing, because Standard American English, just with an African American pronunciation, is less foreign than Australian English, which has not only different pronunciation but different vocab etc as well.