Given recent research into using WiFi to “see” through walls or at the very least track what humans are doing in a space, I would argue we should go in the opposite direction. I’m pretty happy with my current house and adversarial-to-WiFi cement walls. Sure, I had to run some cable and buy enough access points for about 3x the amount of square feet of my house (if you go by the advertised specs) but this is a one-time investment that is pretty small in the grand scheme of home-related things.