Thank you for a thought provoking review. I have studied Soviet history for many decades and not heard of this film. There were several leading Bolsheviks who sponsored the free expression of the arts such as Lunarcharsky before he later fell foul of Stalin. Socialist Realism reflected on the cultural level Stalin's consolidation of his grip on power. It was anathema to the ideals of Lenin and his co thinkers in 1917.
The only Soviet film director I know from this period is Eisenstein so thank you for bringing this director to our attention.