I never suggested the south be "walled off". I suggested the program should not be applied there.
I'm not afraid to say that one of the advantages of living in Broadmead or Uplands or Fairfield or Gordon Head is a general lack of street disorder and crime. That's one of the favourable attributes of more affluent SFD areas. And I don't think that bringing crime and disorder into into every community is the solution to crime and disorder. But to many SJWs that's the "equity" solution they desire. Make living sh*tty for everyone.
Are you saying that townhouses and house-plexes are sources of crime and disorder?