Not sure if they are connected somehow, but a website with a very similar name http://levels.fyi with FAANG salaries information makes you quistion your choices about being an indie developer
It's not realistic that the vast majority of people can expected to be hired, or move to those places, let alone achieve those salary levels. I would be amazed if even 1% of applicants actually got hired. You have 5x greater chance of being accepted at Stanford. There is a tremendous bias on HN, because those people that have, frequent here.