Of course it's bullshit.  Most - if not all - of the countries involved have specialised computer and financial crimes units and police regularly call in civilian experts to assist with their investigations (especially universities).  There are plenty of technology experts they can call on for assistance.

The prosecution is not the financial burden of the victims in criminal cases - the only people who would have to worry about legal fees would be the accused.

It's known that both financial intelligence units and federal police departments are aware of Bitcoin.  They may welcome a criminal investigation in which it's a central feature as an opportunity to learn more in general about how Bitcoin, crime and the exchanges intersect.  It's not like it would be a local county police department investigating this matter.  I think you're all underestimating how many young, tech savvy people work in law enforcement and financial intelligence.