They ask questions that kids are taught at 18/19. It's almost shocking; this is how you're selecting?
People that are in their 40s aren't confused by the question but are more confused by why it's the question as being able to answer it is so disconnected from any metric of competency or quality.
It'd be like saying "so you have an engineering degree, oh a masters from 20 years ago. Cool, remember Lagrange multipliers and Hamiltonians? I'm sure you do. Here's a problem. You have 10 minutes"
That's why we keep seeing the failures of the past repeat. Tech selects for people too young to know it and too arrogant to study it.