Because it places value judgement on others, who culturally have a reason for how they speak (Sunn m'Cheaux covers this in better detail than I ever good, considering he teaches about it as well as the Gullah language at harvard: https://alp.fas.harvard.edu/people/sunn-mcheaux)
All this is to say, that what I am saying here is a small thing. One aspect, and if you find yourself feeling upset about hearing it, maybe its because you don't know enough. I recommend you go and find some information yourself. Since you're such an individual and all.....

source https://tech.lgbt/@pangoriaF/112540441480110128