There are indeed areas that have become as described, although there have been no go areas for centuries on and off. (Streets at day or night time in Victoria Britain?)
Its this that is the point strikes me when looking at things as a whole...
...*I'm sure we can all think of people who have lied and cheated their way through life who have done very well for themselves* ...
Plus, in town centres - where it is more noticeable, a major factor locally without doubt is the closing of key businesses - JL and similar closures for example - during and soon after covid that has taken the heart out of my very own city centre. There are pockets in the town that were like this before, they just didn't get noticed in the same way.
Look, in terms the healing we are searching for there is no doubt at all that social deprivation is the driver a substantial % of what we find. This much is so well documented and our means to tackle it limited, but its my opinion that its in the interests of those governing us to "divide and rule", Turning people against each other is a tactic to take our eyes of the ball.