Diversity is just short hand for US needs to brain drain from around the world, the success is system that disproportionaly increase size of US skilled workforce vs rest, so people better play nice with each other (worked well until not). When PRC went from making 1% of of global technical talent to 50%, and able to retain them or in this case redrain them, they win talent game for generations (at least until 2070s). They will output more stem in next 20 years than US will increase population, births + immigration, i.e. their technical workforce will be 2-3x US. "Diversity" can't brain drain enough to make a dent on those ratios.