Said this elsewhere before, communists will pull out every liberal excuse when being criticized from the left about veganism.
"They're mean" "Acktshually it's not as good for x as you think" "What about x group of people that this will impact" (who haven't even expressed opposition or concern about the issue) "You just care too much"
Same vibes as supposed progressives who are sharing pro-Israel PragerU vids after criticizing PragerU on other topics.
Ideally every comrade is vegan, but if for whatever reason you cannot be or are working towards it then at the absolute least you can support those who are and accept that it is the morally correct position instead of all this hoop jumping