Only the vanity of the insane can be affected by changing the unit with which they're measured. Making the meter shorter might make someone whose house's area is 200 square meters believe it is actually 400 square meters, but it would still be the same house. All that this redefinition of the meter has caused is ruin an engineer's ability to properly build or maintain a house. Similarly, devaluing a currency may make a country richer nominally, or increase the nominal value of its exports, but it does nothing to make the country more prosperous.
