The point of your posts are these:
I am confused as to why folks are worried about it. -- You don't understand why people are concerned about affordability for the middle class and those who don't make enough money to be considered middle class
And folks with less money might be laughing and luxuriating in their space in the suburbs (living THE AMERICAN DREAM of a generation ago)...and scratching their heads as to why the middle class pays big for cramped conditions and less square footage in apartments... and hanging out in cafes. (Which is kinda THE EUROPEAN DREAM).-- You don't understand that it is extremely problematic to expect people who earn $15/hour and less to clean your dishes at a neighborhood restaurant to commute hours a day -- and pay for the monthly pass to do so.
But that is exactly how it is in places like Paris....And the city functions. -- you don't understand that when the suburbs, where people aren't as wealthy and have to commute in to the city to work, erupt in to riots due to economic disparities, and discrimination, that's an example of what you are suggesting is no big deal actually not working.