If you want an 'I didn't know that!' moment, have a listen to what @JoannaBlythman has to say (at 35mins) on the origins of veganism and the hidden environmental and human costs of eating certain foods like jackfruit and avocado.
This makes a lot of sense. The danger at the moment is that people's decisions are being driven by headline-grabbing claims flying around in the media and on social media, many of which are either factually incorrect or taken out of context.
We need a balanced, fact-based debate