apparently no one at the la slimes has ever bothered to look at an atlas (or online map). tunica is well over 300 miles from mississippi delta.
The entirety of the western half of the State of Mississippi is considered “Delta” country.
The “Delta” is not really the river delta, it’s a big triangle of glacial outwash that stretches all the way practically to Memphis, and Tunica is right in it.
Mississippi Delta is not the same as the Mississippi River Delta https://en.m.wikipedia.org/wiki/Mississippi_Delta