I kind of get it. Part of it is the natural passage of how technology changes.
Historically, American cities are built on a river, lake, or coastline (the largest ones are) and develop from there (a few exceptions like Kansas City or Fort Worth, are based on railroads), the city expands, different people groups move in and change their neighborhoods, things decline and gentrify. And of course every decade brings its own slightly different aesthetic.
There are going to be things that city sims won't let you do, even with those. The developer/gaming media axis get antsy when you try to do things that aren't "approved", so tearing down the black/third-world neighborhoods would be haram.