Caveat: I am pro more transparency in compensation data. But it's hard to do right.

> mean(), median(), and std()

play this out a bit, and you'll quickly realize that there are infinite ways to game this. Something like levels.fyi only works because levels are a thing, and they are consistent across a relative handful of companies (most tech workers do not work at those companies).

And even levels.fyi won't publish salary data until there are enough data points at a company to prevent such publication from inadvertently publishing how much an individual person makes. This makes it less useful for (say) a senior looking for a job at a non-tech or small firm.