So much to say about this. One, how many of these people realize that dense urbanism works in Europe not just because of how the cities were constructed centuries ago, but also because of demographics? The Netherlands is likely a nice place to live, it's also extremely white, and most of the people who aren't white are some kind of Arab or Asian person. You don't have a ton of blacks in Holland like you have in say France or the UK. Which should prompt the question, why do they always valorize Dutch cities and not French or British cities? They're all in Europe, all somewhat similar in size and scope. Maybe it's because you get videos of thousands of dark skinned teenagers rioting and stealing shit in the UK and you don't see that in the netherlands for some reason, just a thought.
Secondly, these people advocate big government solutions to infrastructure problems, which isn't 100% wrong, but then at the same time they lament the increasing size of vehicles and the fact that blind spots are much larger than they were in cars in 20+ years old. Apparently none of them realize that the reason for this is government mandated safety regulations. Cars have to have ever increasing crumple zones. This is why backup cameras are mandatory in any American car since 2013. Every car has a fat ass now because that makes it safer if some retard plows into you. Automakers could not make smaller cars with larger windows and greater visibility even if they wanted to.
Thirdly, when these people complain about single family housing and zoning laws, and advocate that everyone live in apartments, what they are actually saying is "you shouldn't own property, only large property management companies should own property, and you should rent from them". For people who claim to hate landlords, this is hypocritical.
The truth is that racial demographics and the extreme violence of the black population (in truth, a minority of black males in their teens and early 20s) make these urban planning concepts less than palatable to most Americans with common sense. For a great example of this kind of stuff in action, look no further than St. Louis. STL was a city that got fucked up and experienced extreme decline in the latter 20th century until now. The city of STL (which is small geographically) was over 800k in the 1950s and is down to 300k people today. This is largely because of desegregation and rising crime rates which incentivized whites to move to STL county and farther flung suburbs and exurbs. However, in the 1990s when STL still had about 400k people (keep in mind metro area today is over 2 million, but talking about urban core itself has value), the city leaders decided to build a light rail system to improve public transit and ideally make St Louis a more desirable place to live so that people would move there and citizen lives would get better. So they built the metrolink on existing but unused defunct rail lines. It has since expanded and is fairly extensive for a midwestern city.
But it's hard to argue whether or not it is good. Yes it provides an easy and affordable way to get around the city. But it was designed to be inclusive and equitable, and to serve the cities poorest people. And for what it's worth, it extends far outside STL city, into the suburbs of the wider metro. In the east it goes to East St. Louis (somehow even worse than regular STL) and Belleville, and in the west it goes all the way to Lambert Airport
What this means in practice is that poor young uneducated kids with a propensity for crime have a very easy way to travel the city even without cars. While everyone knows about the riots in STL in 2014 and 2020, there is also just random petty crime and gang violence. There are some nice parts of STL surprisingly, like "The Loop" which is a touristy street where Chuck Berry had a restaurant (he used to film women in the bathroom there) is actually fairly nice right by Washington University. Well, it's not uncommon for groups of black teenagers to get on the metrolink (which can often be ridden for free if no officer is there to check tickets) in East St Louis, ride it to The Loop, get out, run up and down the street assaulting people or robbing people, and then breaking the windows of shops and stealing shit.
That article goes into more detail, but this is not a one off, this is a frequent occurrence. I hate to sound like a redditor, but at the end of the day, this is why we can't have nice things. Public transit and walkable cities might be great in high income white countries like the netherlands or other parts of Europe, but in the USA it simply means that people who want to commit crimes now have an easier way to get to your neighborhood. Suburbs are not perfect, and have many problems, but at least for the past 50-60 years it's been possible to move to the suburbs if you want to avoid the urban crime. Zoning law changes and increased public transit may end this, and we might have another wave of suburbs and exurbs extending further out into rural areas in the future