There's an unfair implication there, as YC does want to improve the world (while making great wealth along the way).
It'd be more to the point to say that it's a reminder than YC is part of an institution where a small class of people (investors and founders) routinely take home millions, while rank and file employees (even with employee #1, 2, 3...) get to only watch as the CEO and investors play with their Maclarens and spend their millions on whatever they're passionate about.
It'd be more to the point to say that it's a reminder than YC is part of an institution where a small class of people (investors and founders) routinely take home millions, while rank and file employees (even with employee #1, 2, 3...) get to only watch as the CEO and investors play with their Maclarens and spend their millions on whatever they're passionate about.