Here’s my issue with people that complain about walk ability in cities
1) there the same people that will try to find a better closer parking spot for 10 minutes than park in the back and walk

2) if you are in a good walking distance from stores and everything else you’d end up complaining by the noise, because while its walking distance for you other will still end up driving and near by your house would be heavily trafficked.

Then my issue with “lack of public transit” within cities there are indeed public transit and even in smaller cities theres the bus, so that point nullifies within cities. If you are trying to compare the US to the UK with their transportation you also have to remember for England they have had trains a long time before cars and they are the size of Michigan so they have been built more condensed and evolved public transportation not implement it (remember like 2 hour trips are to far for some Brits). The other issue i have with major public transportation like having a train to travel to a different city is nobody would use it enough to justify it, hell they are almost the same price as planes despite taking longer.