I don't have a strong opinion, except that I don't think I like either extreme. But this retreat from open-concept living spaces back to having walls again does seem to be a be-careful-what-you-wish-for example. We have two large rooms in the house, and four smaller ones. I spend most of my time in one of the smaller ones. Or out on the screened porch. The other large room is for recliner naps or my wife's prayer time and bird-viewing out the large window.
Children hate open-space, until they have moved out and are visiting back. They like to have four walls.