From a US perspective, I think walkability score is overrated because walkability scores are ridiculously inflated. There are like 5 places in the entire country I would consider actually walkable (and they aren't affordable), yet many places will have a good or great "walkability score".

And walkability is a tradeoff for space. Pretty much everyone in my family are Single-family home for life kind of people, but they all enjoy visiting walkable places and talk about how nice they are. I guess what I'm trying to say is, it's not that people don't value walkability, it's that there are very, very few good walkable places to live. Would even go as far to say close to none, but I'm sure some smaller towns are out there that go under the radar.