I'm going to respond to this because I think it's necessary. Not everyone is going to want to live in an urban, 15 minute city. For example, people with families or people who need nature. The 15 minute city is a great idea for some and should be planned for, but it isn't the one size fits all, especially in America.

Instead of forcing it down everyone's throats, build for it but also make suburbia more environmentally friendly. Encourage rain gardens, natural and local ground cover instead of grass, white metal roofs if it can be done in that environment as an efficient solution, and personal wind and solar power.