Everyone could have a house here and we’d still have plenty of room to space.

You may not run out of wildlands, but if everyone is in large enough houses, it becomes difficult to get to the wildlands (or anywhere else you need to go) without using a car. For various reasons, !fuckcars@lemmy.world, is against designing cities around cars.

That said, I believe low density can work just fine. You don’t need highrises to improve population storage efficiency. Simple two-three story buildings work just fine too

I agree. The problem comes when you have large houses with big yards. If you instead have rowhouses, you have plenty of density to avoid car dependency (if the city is designed properly).