Progressive at first, but then sorta forgot about it.

At the start, women were given rights that suffragists in the UK or USA could only dream of. Then it stopped. By the 1960s, women in the USSR found that they were still expected to do all the same old household chores while also holding a job outside the home. Meanwhile, western feminism had developed a strong second wave, and later a third (arguably more since, but that gets complicated). Those waves dealt with increasingly abstract issues in the patriarchy, including the problem of household chores.

This simply didn’t happen in the USSR. Developing one would have required greater freedom of speech than anyone had in that country.