You are making the false assumption that your consumption is causative to the production of animal products which is, unfortunately and non-intuituvely, untrue. The only difference between vegan and non-vegan diets is whether animal products end up on your plate vs. in “cheese mountain” type stockpiles, exports, landfills, etc.
That being said, ‘commie’ is a terrible communicator if that’s what they’re trying to say. Going vegan does help to highlight some of the contradictions of capitalism and you’re on the right track as it should be advocated for. However, the ‘invisible hand of the free market’ does not translate veganism to any reduction in farmed animals, land or water use.