Completely agree - but as a counter point too, this for me also led to anorexia (not going vegan, but a restricted, over-analysed diet). I changed my diet and started monitoring and analysing everything, combined with what must've been a vulnerable mental state, meant I couldn't rationalise eating
anything. I'm talking under 700 calories a day for months on end.
One minute you're being mindful about your intake, the next you're stood paralysed in the chilled aisle physically unable to choose a meal as they're all "so bad".
If you're in tip-top mental health, then restricted diets can work. But for anyone reading who's dealing with proper body image or any other food related issues - just be careful please.