the internet damn near killed "regional sounds". you guys demand people be original while simultaneously demanding they stick to a template based solely on where they are from, that is an old fashioned way of thinking, and imo, its dumb and conflicting. granted more often than not the place that you grow up in will influence and likely shape your art but to me there is nothing inherently wrong to break away from the expected mould.
furthermore, your post makes too many life assumptions, its the typical "observation; clouds. conclusion; dinosaurs" type of reasoning. you know little to nothing about these dudes except "they're from NYC" and "to me, they sound like a southern rapper" so you jump to "they are not being themselves", that is flawed logic if i ever seen one.
culture is fluid and ever changing, especially when speaking of ethnic minorities demographics since we pretty much stick to ourselves, it just so happens that now we are able to stick with "ourselves" across the country, an anecdotal example but look at the way black people use social media compared to any other race, the differences are readily identifiable, and yes the internet is at the core of that, nikkas are no longer stuck to "what happens in their neck of the woods" hence the reason you see phenomena like "dabbin". iggy azalea and the likes are vultures because when she speaks she sounds nothing like what she raps like, but our youth is different, hell, NYC nikkas been saying "lit" and you're likely to find young cali or southern nikkas actively using that word as part of their lexicon, to them its natural, and this goes beyond slang, to style, to music/sounds preference etc..
