Hmm, I can definitely say I've seen a version of that at Indian IITs. all great students but most feel like imposters there. also the subtle thing is that the risk/reward calculus gets f-ed up, meaning, for all the students who have been at the top of their games wherever they came from now the rewards for significant incremental efforts were minuscule. So I have seen many disengage & get into 'enjoy life' mode.