Good points.
Recently, I was chatting on Facebook to Korn Chatikavanij, former Finance Minister who told me all remittances will be digitalized soon. His daughter, formerly of World Bank, is now the CEO of OmiseGo, a crypto company, recently bought by CP Group!
At the moment, Japanese can carry our cross border remittances to Japan using crypto, through SCB.
Shortly, all monies will be easily traceable.