+1
that part needs a new thread, however when choosing a place to live and deciding that it's better for your family to live in a 4 BR, 2 BA, single family home with a backyard and good local chinuch over a small 3 BR, 1 BA apt in Brooklyn with no yard and cramped, low-quality schools, then that's not materialism. It's going somewhere better for your family to learn and grow.
In fact, it's the opposite of materialism, as the jobs may not pay as well, and there are less Kosher restaurants and amenities. We trade in some of that for the benefit of our family's chinuch/upbringing.
You mention 2 'pros' for OOT, then pivot to the one that suits your point, instead of the one that undermines it. If each person thinks their schools are better, but one lives in an apt and the other a spacious house (let's say for the same money), the one in the apt has the much better case for saying they chose where to live based on chinuch. It's harder to claim that you moved OOT for the chinuch when it just happens to come with a gashmiyus advantage in housing.
I'm not ch'v suggesting that everyone moving OOT is doing so only to have more space, or that everyone in town is consciously sacrificing housing comfort for chinuch. But if you're going to frame the argument that way, you can't conveniently ignore the fact that OOT is a gashmiyus upgrade from a housing standpoint.