Apart from SN, I think we have quite a number of other users who have bitcoin in their wallet who can possibly be considered the second, third, fourth richest person and so on on the forum after SN. But I think they are someone who care about financial privacy and for sure they won't reveal it publicly. I believe they are early adopter who believe in the potential of bitcoin and hold it for the long term.
I wonder how it feels knowing that you can buy literally anything you want with that kind of money and still have 99% of it left.
I wouldn't think about the wealth that other people have because you will only feel disappointed why it took so long to find out that bitcoin was an asset that could create new billionaire with low capital in 2009. It is better to do something more useful than to dream with the wealth that people have.