Is it true that native New Yorkers generally say "tawk", "idears", "Petah" (instead of Peter), "baygs" etc?

Personally, I like a Jewish New York accent...lol. I have heard this happening also in the south. A native W. Virginian told me that most of the kids in the south really have no accent or are loosing their accent due to watching a lot of TV, which makes a lot of sense.