it doesn't actually reduce the use.

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.

what crops that are fed to beef chicken and pork are parts of plants that people won't eat for the most part. The same fields that grow the soybeans we use for oil are growing soybeans that are used as feed. The same soybeans that are used for oil are used for feed.

but beef, chicken, and pork continue to be made in increasing amounts. things are getting worse despite the fact that vegans exist. being vegan doesn't help the planet at all.