Wouldn't surprise me to see these people switch to one of the other, lesser-known variants to work around the ban.
That's exactly what Georgia did. In 1956 they added the Confederate Battle Flag to their state flag in support of white supremacy and segregation, and in 2003 switched it for the Confederate Stars and Bars: https://en.wikipedia.org/wiki/Flag_of_Georgia_(U.S._state)
>On April 23, 1863, the Savannah Morning News editor William Tappan Thompson, with assistance from William Ross Postell, a Confederate blockade runner, published an editorial championing a design featuring the battle flag on a white background he referred to later as "The White Man's Flag."[6] In explaining the white background, Thompson wrote, "As a people we are fighting to maintain the Heaven-ordained supremacy of the white man over the inferior or colored race; a white flag would thus be emblematical of our cause."