My post specifically was addressing those with 1-2 kids and also dispelling the notion that only 1 car seat fits in a compact car. Very, very few families have more than 2 car seats it seems yet many have an SUV because it is "needed" because they have kids.
I have 5 kids to cart around from time to time now and there is nothing that would work for us but a minivan in our situation. (3 across the back, a booster in 1 captains chair and a 12 year old in another).
I am not going to go so far as to say that an SUV is not the right choice for some situations. Lord knows, I have never had to fit a triple stroller in anywhere. But clearly, there are way more SUVs with unused third row seats on the road than are strictly needed. And tons of 5 seater fashion statement SUVs that never leave the city or burbs
I guess my point in participating in the thread was to say we all make the choices that we have to that support not only our world view, but our life, family and reality. I make tons of choices in my daily life that would fit nicely with even the most hardcore MDC'er and other choices would be considered very mainstream I try to balance and live the best life I can.