Why do people hate vegans so much?

Food critic William Sitwell isn’t the first person to express hatred toward vegans, but he might be the first to lose his job for it. Sitwell stepped down from his job as editor of Waitrose Food, the magazine of a UK supermarket chain, after his email response to a freelance journalist pitching a series on plant-based recipes went public.
Read more: https://www.vox.com/platform/amp/future-perfect/2018/11/2/18055532/vegans-vegetarian-research-uk?source=Snapzu