>By anchoring borrowing costs at or near zero, the BOJ enabled Wall Street to borrow Yen cheaply and invest it with leverage into higher yielding instruments globally, such as U.S. treasuries, equities, and cryptography
Think you mean crypto currency here?
No, they've got into cartography now. Have you never heard of a bitmap?
They got the word wrong, but I don't believe cryptocurrency would count either: The interest rates at BoJ _are_ low, but to borrow anywhere near that low they have to have high quality collateral like treasuries.