I feel this sort of joke is more or less poking fun at fashy great replacement rhetoric by neo-nazis, a not insignificant proportion of which worryingly and at times unironically advocate for bringing back the Volksgemeinschaft. In pre-war Nazi Germany, single women and childless couples were taxed for holding jobs as part of a program to give loans to people with children. Women who had “racially impure relations” were paraded through the street and sent to concentration camps. And immodest clothing was forbidden. Men weren’t explicitly given wives by the state, but every social and financial pressure imaginable was placed on women who did not conform to the image of the ideal aryan housewife. These pressures would have pushed women to settle for relationships they wouldn’t have considered otherwise.

The USSR had a similar policy of taxing the childless, but it only affected childless men (including bachelors) and childless married women. Thus, the financial pressure was on men to find a wife (not ideal, but the cost tapered off over the years), whereas women could be and often were fairly sexually liberated until settling down with a partner.

I don’t think any serious socialist or communist doesn’t consider women’s liberation a huge part of the cause.