The needless gatekeeping that is “create a linked list” or “reverse a binary tree” or my favorite: sort these arbitrary list of items are stupid. The thing is they’re used as a proxy for intelligence and I think they don’t work. Think of all the countless folks who cram for these interviews and then can’t actually write code in a real setting, use git, or manage expectations. This guy could do all of those things as shown by his successful consulting work.