I suppose you can personalize this an make it into some sort of snooty condemnation of the working class, but I never got the impression that Malvina was snooty - and she was a powerful spokesperson on behalf of the working class. I think the message of the song, is that there is a need for wisdom in urban planning. Well-planned developments need not cost any more than the ticky-tacky ones, and they're better for community and they're better for the environment. I know there are political forces that try to denigrate urban planning, but it's a very necessary and constructive function that needs to be done done wisely.
One very important topic in urban planning today, is providing housing for the homeless. There are ways to construct affordable housing that is pleasant, pleasing to the eye, functional, and durable. It takes imagination, but imagination costs very little.

-Joe-