First of all suburban sprawl is unsustainable and irresponsible but one must recognise that it has real and understandable material appeal to people. If you manage to live there you get space, you get a garden to relax in and for your kids to play in. You don't have to put up with landlord bullshit and the money you pay each month goes towards an asset you own, instead of lining the pocket of a parasite landlord.

But in addition to this I suspect the reason chuds loves suburban sprawl is that it represents their reward for being good Aryan boys and girls. They get to live there, or at least they feel entitled to living there while the people they feel superior to, the poor and the marginalised, are excluded. The poor are also excluded from mansions and super yachts but so are the chuds so these object of extreme wealth becomes unsuitable to act as a visible divider between master race and subhumans. Suburban sprawl on the other hand is perceived to be within the reach of most "normal" people.

This perception doesn't always align with reality though and that is where you get the chud genre of complaint that "I a hardworking (as opposed to the lazy others) white man can't afford a house!" that diffuses anger over economic exploitation into anger at those who are worse off than you are yourself.