Nah Change isn't scary, maximizing any single concern in the real world is just too shortsighted. Also not accepting transit or bikes as a part of walk-ability is just confused. Last month I traveled ~400km 206 bike 180 transit and just 8km on foot and 1km in a car. The 180km transit were traveled in a time slightly longer than the 8km walking. This travel is only for maintaining social connections, I don't commute and I have 2 Supermarkets on my street still it is very important to me to be able to move in this way. Even if I could easily find new friends or get my family to move so close walking would be viable, still travel would be important to me just to experience a diverse collection of places and people. Nobody in a modern Context will ever consider a few km a far distance, you can feasibly walk 40+km in a single day bike 140+km in a day and take a train almost 2000km in a day, its nonsensical to discard the later two just because they use technology, especially in places where this technology exist.

Sure generally I agree splitting and localizing things might be part of a way to more equitable wealth distribution but at the same time, for some essential industries it is largely impossible, just because of the limitations physics gives us. We should take control from the owners of these industries and hand it over to the workers for real democratic control and not destroy thermally efficient production processes. Because thermal efficiency is actually not the same as profit, which is the primary reason for wealth inequality. But I get it even the slightest threat to property rights is scary :P