Quality and correctness are important! And AAVE does have and enforce both. If you answered a question like "where be the car?" with "it be on the road" or "it's on the road" when in fact it be in the garage, you would be grammatically incorrect. I bet you have no idea what habitual be even is or how it works. (I didn't)
And it all begs the question, why, in the US, is Standard American English (which is overwhelmingly native to white people, and usually the ones with the most privileged positions in society at that) more quality and correct than any other variety? Is there something magical about their speech that makes it quality and correct? Keep in mind English itself is a hodgepodge of butchered other languages.
Is Australian English not quality and correct?
How come grammatically standard English, just spoken with an African American accent, is still not quality and correct?