Send fiat overseas and let me know how that goes. Crypto has plenty of issues but calling people who use a decentralized form of currency as "idiots" doesn't paint you as the sharpest tool in the shed.
So I don't think wire is necessarily a perfect substitute. There are different ways to get fucked and you have to decide which risk looks most palatable for each individual transaction. It's sort of a pick between a traditional finance system set up to fuck the little guy or the crypto landscape which is a fraud fest wild-west of living at your own peril.
I've done that a number of times this year, UK->Australia, in the six figure range. It went great, fees were low (in the range of 0.3%) and the transfers were usually complete in an hour or so. All of this was regulated and insured at every stage in both countries.