You get far out enough, and there wasn't the effects of a freak winter storm that brought below freezing weather and snow to a state that doesn't usually have them though.

Winter storm Uri had impacts from Mexico to Canada. It was a major storm for close to half the country. You probably didn't experience it much in Florida, but if you were in New Mexico, Texas, Kansas, Arkansas, Missouri, Illinois, Michigan, Louisiana, Mississippi, Indiana, Ohio, Tennessee, Alabama, Pennsylvania, New York, Vermont, West Virginia, Virginia, Maryland, New Jersey, Massachusetts, New Hampshire, Maine, or Connecticut it was a bad winter storm. Even parts of Minnesota were impacted with generation issues due to the massive natural gas supply drop. The storm spanned from Canada to Mexico, from New Mexico to Maine.

SPP had generation issues like Texas because of the massive drop in natural gas supply coupled with high demand and had rolling blackouts as well. MISO was the most impacted part of the country weather-wise and had practically no spare capacity, and PJM was also still under very heavy load.

You get far enough out and you start realize the rest of the country isn't a single grid. The east and west aren't very connected, and from the central US to the east there's really a few different grids with interconnections, which were all getting maxed out without trying to take on the shortfall in Texas.