Albeit, as a Pole myself I think soviets created the best and most livable and efficient neighborhoods I've ever seen in the world.
There was no shortage of green spaces, parks, benches, people spent a lot everything was close on foot, public transport was efficient.
American style suburbs where development is horizontal rather than vertical are miles and miles of nothing where everything is far and requires a car.
Post 1990 economic gains killed soviet style neighborhoods as they were not designed for so many cars, people don't have as much space to socialize, kids have to go more far to play because parkings are put in those spaces.
I kinda hate cars for that.
And that's setting aside the question of why that system was so impoverished and what it chose to invest in. But the architects and urban planners deserve some praise.
A similar phenomenon occurs when architects place a modern building in a scene of beautiful classical architecture, sometimes even connecting the new building to the old. The "beauty" of this type of modern architecture is parasitic on pre-existing beauty and cannot stand on its own.
UMass Amherst's campus is famously too-brutalist [1] for the university's 21st century tastes. From my years there, the embarrassment was for good reason. The buildings make you feel all of the things I mentioned above.
Brutalism works when it either contrasts contrasts with its surroundings. Implant concrete-laden sharp-shapes into nature and the contrasting outcome[2] is beautiful. Even America's most famous house : Fallingwater [3], uses huge concrete slabs exclusively while looking absolutely stunning. Another form of contrast is the Velasca Tower [4] which standout out like a sore thumb when set against its very Italian surroundings.
Brutalism wears on you the second it is used as a template for huge repeating projects. It has good shock value. But, do it enough times, and it is exhausting.
[1] https://www.darrenbradleyphotography.com/post/umass-amherst-...