No, they're not. Urban sprawl is the result of
deficient density. People who want low density can commute. For any fixed population, decreasing density must, obviously, increase commute times and sprawl. This isn't complicated, though appeals to "return on investment" cloud the issue.
Of course, part of the subtext of these discussions is that proponents of SFZ and owner-occupancy tend also to believe that their favorite cities should have controlled population growth. It's just not a good look to say that out loud.
