Probably an unpopular, "grass is always greener" opinion, but this is why leetcode-style interviews can be a good thing at FAANG. Anyone with time and an internet connection can gain experience with data structures and algorithms via leetcode, whereas it's much harder to get hands-on experience with scaling real transactions-per-second on your own. And, as contrived as leetcode is, it does measure something about your ability to grok how code and infra scale against time and space.