Correct, it’s more like the NFL with conferences, there haven’t been league offices or presidents for decades, no more league umpires either.
Any team can leave anywhere depending on the circumstances, I’ve been a Sox fan for 71 years and have seen them very close to moving 3 different times. Let’s face it, the White Sox are not a marquee MLB franchise and they are wearing out their welcome in the Chicago area with the crap that has gone on the last 2 seasons. I’ve lived in Florida now for 30 years with no ties to the Chicago area anymore but it would still break my heart if they left my original hometown.