This map mostly shows you don't understand what's happening in the country. It's not a coast versus flyover, it's rural versus city, even in the coastal states. Go take a look at the county by county vote totals for New York, and you'll begin to realize why this map is so dumb.
Beyond being dumb, it's insulting. It also contains the vast majority of the country's black population, a huge part of its Hispanic population, and the majority of its poor population. So keep posting it if you want to signal you have no clue what you're talking about, and that you'd like to exclude black, Hispanic, and poor people from America. That's a good look.