How about actually using the damn site instead of taking its word (some boilerplate the person behind it might not have ever read)? When you submit a net worth:
POST https://www.keepingup.com/api/event
...ton of headers...
{"n":"engagement","sd":30,"d":"keepingup.com","u":"https://www.keepingup.com/benchmarks/net-worth/age-30-33","e":13813,"v":37}
POST https://www.keepingup.com/api/event
...ton of headers...
{"n":"benchmark_reveal_computed","v":37,"u":"https://www.keepingup.com/benchmarks/net-worth/age-30-33","d":"keepingup.com","r":null}