GMAB, feminist: if you do some research, you’ll find that Rav Kook wasn’t really a vegetarian. He wrote a pamphlet about his vision for a perfect world, where he said that maybe people would be on the level before the flood and wouldn’t eat meat anymore, but he never advocated being a vegetarian now. He ate only vegetables for a small while for health reasons, but was not a vegetarian for most of his life.
Do some research, you’ll find it.