I don’t think that’s 100% true. I know they’re building a walkable, car fee suburb in Phoenix/mesa. And at least in my area (Southern Hamilton county Indiana) they’re building more and more multi use pathways for cyclists and pedestrians along the major roads to businesses and schools.
You should totally pull up Google maps and select cycling routes in that area (near Carmel) and tell me what you think. It’s not just scenic trails through neighborhoods, but actually useful routes to places you want to shop or hang out.