Vegan restaurants are closing, RFK Jr is sounding the drum for carnivores, and the protein cult is bigger than ever. But eschewing animal products helps me ward off a sense of impotence – and despairLet’s get this out of the way, because I’m itching to tell you (again): I’m vegan, and this is our time, Veganuary! Imagine me doing a weak, vitamin B12-depleted dance. Unlike gym-goers, vegans are thrilled when newbies sign up each January, for planetary and animal welfare reasons, but also, shallowly, for the shopping. This is when we can gorge on the novelties retailers dream up: Peta’s round-up for this year includes the seductive Aldi pains au chocolat and M&S coconut kefir.I need retail therapy, because Veganuary has become quite muted and that’s part of a wider inflection point in vegan eating that I’m sad about. “Where have all the vegans gone?” Dazed asked in November, and now New York Magazine has investigated, with the tagline: “Plant-based eating was supposed to be the fu...