Did you think people wanted to bulldoze suburbs and not replace them with anything? What did you think was meant by dismantle? I always assumed it meant dismantling the rules that prevent the very natural market-driven densification process.
Suburbs as they exist in the US do not exist because they are the best X for any X that exists; but because of top-down central planning. Remove those rules, and the apartments all but build themselves.
I don't think anyone wants their house bulldozed, and the way you phrase it is kind of horrifying. Sure, let's dismantle zoning regimes and let development happen organically. Suburbs may get a few more services but this isn't going to magically make the need for cars disappear.
Suburbs as they exist in the US do not exist because they are the best X for any X that exists; but because of top-down central planning. Remove those rules, and the apartments all but build themselves.