Why is this any surprise that Kamala speaks with a Southern acce

Cape May - Why is this any surprise that Kamala speaks with a Southern accent, African American dialect, and Midwest tang when she's in front of certain crowds ? She is an astute chameleon, just like any politician. President Biden said he was raised in an Irish Catholic, Black, Latino, Southern, MidWest household in Delaware. Remember when he stoically stated, "‘If you have a problem figuring out whether you’re for me or Trump, then you ain’t black’