“barren coastline in North Carolina or Texas.”
I see that you have never been to either state.
Oh, but I’ve been to both.
I see you have never been to The Rockaways.
Texas has 350 miles of barrier beaches. Padre Island is 114 miles long with a population of about 13,000. Galveston Island is 27 miles long and has a population of 58,175. Mustang Island is 18 miles long with 3,480 residents. I believe St. Joseph’s (San Jose) and Matagora Islands are unpopulated.
The Outer Banks of North Carolina is 200-miles long, with a population of 57,755.
Between the two states there are 550 miles of barrier beaches with a population of approximately the same as New Yorks Rockaway Peninsula which is 11 miles long and has a population of 130,000.