Not to be rude or mean to Coach Darek that I can only guess genuinely wants to help people. But, to me, it does tell a lot about hiring practices at FAANG.
Those interviews does not actually tell you that much, sometimes deter competent persons, don't really weed out bad seed, and yet are the alpha and the omega of the industry.
Edit: downvote accepted as long as I have actual counter argunment. Doing an exercice in the vacuum does not tell if you can grasp existing code nor if you'll work well in a team.