Do we know exactly what he was referring to? Because although I obviously don't agree with diverting funds from poor to rich areas, I also think it's entirely reasonable for wealthy areas to have decent roads and working streetlights and maintained parkland - is he he saying that the deprived areas have previously been better maintained?
For instance, I think that maintenance of Sutton Park is just as important as maintenance of Perry Park even though the people of Sutton are generally (but not exclusively) better off than the residents of Perry Barr.
Of course, I highly doubt he'll be talking about anything reasonable because it's Sunak but you never know....