The backlash is financial (and has been underway for decades); it isn’t only whites fleeing these areas, but employers and businesses - you simply can’t maintain a semblance of order or safety there.
As these places circle the drain financially, the infrastructure rots and the only way to revive the area is mass deportations (aka “gentrification”) to restore safety and most importantly, a literate workforce for potential employers.
You are correct, the self destruction efforts are multi faceted, fortunately I am pretty well insulated from all of it, but it is rather fascinating to watch it play out in real time. I guess it’s my morbid sense of curiosity that loves watching a Mass Economic Suicide