It's also because one can study and grind amd optimize for leetcode. So it's really about who has the time, resources (and incentive to work for free) to really

It's also because one can study and grind amd optimize for leetcode. So it's really about who has the time, resources (and incentive to work for free) to really grind leetcode before the interview. In a way it's probably equivalent to students who just bang everything into their head before the semester exam and forget it all again two weeks after. (Not that that's a bad thing, it just doesn't really say anything about a candidate)