Cute, right? I have the same impression, but this may be because I didn't live then and I don't associate it with all the other things that happened then instinctively.
You're right of course in that it's hard to see a woman on a tractor, but what I'm saying is that 50 years of propaganda can't pass without any consequences, even if it was widely recognized as a propaganda and it was actively opposed by many. I think that these efforts actually did something for women, even if only a little. They - the communists - even did something for racial equality: they offered stipends for people from African countries (of course those aligned with communists only) and it was quite normal (I'm being told, please don't blame if that's wrong!) to see a man or a woman with different skin color in the university.
Anyway, while communists did many bad things, they at least sometimes tried to do something good. Someone better educated than me should say how those efforts fared - I suppose they were not that successful, because as you said, it's really hard to find a woman on a tractor :) - but it's worth noting, I think, that they were made.