Kinda misleading or poorly written title. He was not convicted of falling for a crypto scam. He was convicted of embezzling funds from the bank, which he did while pumping them into a dumb crypto scam. It would have been illegal even if the crypto thing was NOT a scam (which is rare, I know).
TBH I feel like it's much harder for anti-crypto ideologues to admit that crypto has non-scam usages. Or to admit that fiat currency is a scam so huge that it's literally destroying the planet.
Crypto is very traceable though - every transaction that has ever happened is in a public ledger!
There's usually a transfer to or from fiat currency at some point, and there's been several cases where Bitcoin transfers have been traced to a real person using that.