Earlier quoted context omitted.
I've interviewed Harvard CS grads for SWE roles at big tech who couldn't write a working program for fizzbuzz, for defanging an IP address, or for reversing words in a sentence, in a language of their choice, with leetcode's provided instructions, in half an hour, with unlimited attempts, gentle coaching from me, and the ability to use the internet to search for anything that isn't a direct solution (e.g. syntax). Ye…
If you don’t cram for leetcode, you won’t pass a leetcode interview. It takes some kids a few interviews to figure that out, even they are from elite school like MIT. You were just their learning experience.
FizzBuzz, reversing a sentence -- this is programming your way out of a wet paper bag, not elite and esoteric skills that need advanced study and cramming