Firstly, your comment completely ignores the negative externalities created by North American-style suburbs in the first place.
Secondly, this is still a strawman: I've yet to hear of any policy proposal that would abolish zoning completely and allow highrises to go up anywhere. What policies would do is things like let the market determine whether it's more efficient to build a McMansion for one family or a fourplex or lowrise apartment building with eight units, all with the same footprint.
But if you still hate this so much, you can live far enough from the city that it's not economical to build next door to you, or you can own enough land that it won't be an issue.