But if that "Vegan Cakes For All" company was using using cows milk in all of its Sponge Cake products and using pork fat in all of its Carrot Cake products then how can that company called itself "Vegan Cakes For All"? If they want to trade then remove the word "Vegan" and call yourself "Cakes For All" because they are lying and misleading and scamming therefore are thieves.
I am not very good at the subtleties and nuances of the religion of the world, but I understood your example of vegetarianism. I think that all these nuances are very important for representatives of the religion of Islam, but for representatives of other religions this is not critical.