I grew up in a "commie block" as everyone aaround me. There was nothing wrong with them (decently sized, balconies, etc.) besides the comparatively poor insulation. It was certainly much better than the quality of your average Parisian housing in a century old building.
There's a meme that shows "leftist housing", and it depicts concrete tenements. It shows "capitalist housing", and it depicts tents under a bridge.
Haha.
But memes aside, no, there are many, many examples of public and social housing that are not concrete slums. Look at Singapore, Paris, the Marxhof in Vienna. Quayside Village in Vancouver.
If you'd like, I can provide links to many examples from many countries around the world of successful public housing that isn't Soviet bloc housing.
Social housing here in the Netherlands isn't quite soviet block but it's poorly built and maintained to the lowest acceptable standard.
In streets where one side of the street has been sold to private owners you can see the difference. The privately owned houses are well maintained and have received upgrades where the social housing is merely 'acceptable'.
I'm also familiar with how the assignment process for social housing works. I'm not sure how acceptable you think it is to wait 10 years to be able to move to a different city.
Social housing must look nice from a distance but i wouldn't want all housing to be social housing.
As many people have told you repeatedly throughout this thread, your understanding of the great success of glorious public housing worldwide is seriously misguided at best.
But I suspect you most likely just glean all of your political opinions from memes, which could explain some things.