Poland in martial law was about like Romania durng normal Ceausescu times
Not quite. In the 60 'until mid of 70' there was a sort of political liberalization and opening to the West, not like in Yugoslavia, but slightly higher than in Poland, at least in the cultural aspect of bilateral relations, publications, films (most of the movies were brought from western countries not from Est). Obviously, such things happened in the parameters of a communist regime.
In the 80 ' was worse than in the whole Central and Eastern Europe. Therefore, there was a significant decline, not only in economic terms. It was also a social and educational degradation. Years of isolation had a huge impact, that's why the recovery period was higher than we expected. Look to the gap between Serbia today and the rest of the Central European Countries, after the years of war and isolation. It is the same.
Now, if you visit a city (buildings, infrastructure, services, commerce), you see, in fact, the outer layer/stratum of a people's culture. Therefore, what I'm writing above has some sense. Besides, there are many other explanations (demolition of the historical site of Bucharest - o part of its downtown at the mid of 80's, bringing gypsies in old houses/landmarks to destroy them gradually in order to give a reason for demolition etc). There are many stories regarding Bucharest. Besides, the structures of the population was significant changed in the years of industrialization. So, nothing resemble with the Bucharest before the second world war,
This is just a short and friendly comment.