I agree. What this graph is missing is "relevancy". It's much easier to detect fraud when not looking at population numbers or a basic graph since these often

I agree. What this graph is missing is "relevancy". It's much easier to detect fraud when not looking at population numbers or a basic graph since these often lead to super nodes and if someone wants to cover their tracks it is easy for them to avoid creating super nodes, as you've described. However, with relevancy in a graph we can detect this type of fraud significantly better as we can begin to find relationships that stick out and are uncommonly common to each other.