The view is that your son, moving into Brooklyn, is willing to pay more rent than the previous group living their. However, he will also demand different types of services.
For instance, I suspect that your son would not be OK with open drug dealing on the front of his building. Having an increased police presence, with the added bonus of a jury pool who will convict, changes what is acceptable to the area and ultimately the culture.
What is happening is that the slums are actually being made to follow the rules and improve. I have seen it in small towns out west. It displaces some residents, but makes the area better.
Why do you keep talking about my son, you don’t know anything about him or what took him to Brooklyn, or what he was doing when he moved there, or anything at all about him, so why insist on describing him to me?
You can find a different way to say what it is you want to say.
Brooklyn has almost the population of Chicago, and if it was a city, it would be the 4th largest city in America, larger than Houston Texas.