One of the ideas that I had is that pork in the СШР is offered as a downgrade that costs less. The communist party would then pass laws mandating this since offering pork as a downgrade instead of an alternative as an upgrade would make it easier to get prosecutions for blasphemy and hate crimes if someone put pork into the wrong food.
20% of the population follows a consistent pork taboo without meaningful exceptions, which is half of the communist party. A third of technocrats believe in Transformatsiya instead of atheism, but it's extremely watered down to the point of being meaningless.
The pork taboo is not required but it's considered better to follow it. Most people who avoid pork in certain situations don't consume it because the alternatives are usually better.
Edit: Additional context
This is the СШР, which is a dyson shell in 50,000. In 48,776, it was populated by technocratic tsarist atheists who believed that the tsar had an innate right to rule because he was the most enlightened of the technocrats. Everyone had pervasive low key depression that never went away, but they were also largely ignorant of it because it was normal to them. Around 48,000, people started to break away and started forming autonomous zones. They developed a belief in a supreme creator and the spiritual being Tanisha Reznova contact them in dreams and psychedelic experiences and revealed previous revelations about God to them. They believe that by living in submission to God, He will remove the fog of spiritual dysphoria and allow them to experience inner peace.
Religion also leads the Transformniks to communism because they believe that capitalism is associates partners with God where corporations become idols. Tanisha mentioned a nation called Merika was founded through divine providence to be a shining beacon on a hill. Merika eventually fell into decline in the 21st century because Tanisha said they allowed themselves to become separated from God by corporations. Eventually people of the three main religions united and fought in the Red Army against the corporations and secular technocrats of the White Army. The Red Army and the White Army are the factions referenced in the first war against slavery under Abraham.