I was born and raised in Chicago and lived there for more than 2 decades, and I didn't find it any more provincial than other big cities with professional sports teams. Do you really think Chicago is any more provincial than New York, Boston, Detroit or Philadelphia? Yes, Chicagoans are passionate about their professional sports teams--who can forget "Da Bears" or the Super Bowl Shuffle?--but the same can be said about sports fans in many big cities.
I don't agree with the argument made by you and others on this board that Lebron is now GOAT, but I will concede a colorable argument can be made in his favor. Where I strongly disagree with you is your argument that LBJ is "most assuredly" the GOAT, and that MJ is #3 or lower on that list. While there was admittedly some hyperbole attached to the 99.99999% figure I gave in my earlier post, I feel pretty confident in saying that a decided majority of fans, analysts and pundits who follow the NBA closely still give the GOAT crown to MJ, and that a very small percentage (less than 1%) wouldn't have MJ as either #1 or #2. As you note, that isn't necessarily an insult to MJ, but I dare say it is an opinion held by very few.