Honest question: with all the talk about brain elasticity being super slow compared to a twenty year old, how the heck are 50+ year olds able to pass leetcoding? Interviewers expect answers within 30 min to 1 hr. I'd imagine older people would have better things to do with their limited free time than to waste efforts on the computer leetcoding.
To me, leetcoding is just another one of those gatekeeping tactics employed by the industry to keep old folks out.