Gimme a break
Let's see - do we have all our hot buttons lined up ready to push?
Wireless printer? Check.
Smart phone? Check.
Toy helicopter? Check.
Wait, it's not a toy helicopter, IT'S A DRONE!!! Oh my god, a DRONE!!! Fear! Fear! Fear!!! It's someone from the government here to blast us to smithereens from the sky!!! It's a perv with a flying camera here to look inside at me dressing!!!
So basically this is a wifi hack that someone happened to do with a phone instead something like a laptop, and they got it within range of a vulnerable printer by using a flying toy instead of just hiding outside the door.
It's like 1998 all over again, but instead of spreading irrational fears about the internet, nowadays you just add "with a drone" to any activity to ratchet up the hysteria factor.
Cool hack, but nothing we didn't know about before.