This is a downright lie, I’m not sure why people keep repeating it. Doesn’t stand to the least bit of scrutiny, BEC schemes are stealing billions and billions via the traditional financial system. Once that money gets sent overseas, nothing is easy.
This does not happen in crypto.
Despite all the deflection, law enforcement was able to recover the Bitcoin. Contrary to your point law enforcement and regulators alike have successfully brought legal actions (civil) and prosecutions (criminal) in the blockchain space just as they have against traditional institutions.
The insurance company, banks, and coinbase are all to happy cryptocurrency was involved at some point so they can do some magic hand waving, and blame cryptocurrency. I would ask why bother, but obviously it’s a successful PR campaign to excuse their own ineptitude.