uh wahhh? this was for older style magsafe adapters to be used with the newer slimline macbook airs and retinas. an 85w adapter is an 85w adapter whether it has a magsafe 1 or 2 port on the end of it means nothing....thats like saying dont use the built in charger of the thunderbolt display to charge your macbook.
it was a convenience piece for switchers who had multiple magsafe adapters for magsafe 1 machines, im sure if you call in you can get more.
but something new is in the air, afterall spring is coming
Its not something that is needed clearly because apple discontinued it.
Apple still sell both MagSafe chargers so i don't see the problem at all, those adapters were rubbish anyway