So... leaving aside that it's completely untrue that we 'wouldn't have got to 8 billion without fertilisers' (we could, we just had multinationals carving up the agri-business telling us otherwise) - this is the most accurate outline I've seen of why we're on the edge of civilisational collapse
essential reading, shared with thanks to Simon Michaux
https://climateactionaustralia.wordpress.com/2023/10/19/10-reasons-our-civilization-will-soon-collapse/