You've got free will right? Nobody forces you to be online, be it on a plane or on your sofa. Even if those around you are using the internet on a plane it's of zero consequence to you.
going up to heroin addicts and reminding them they have free will
Not all of us are heroin/wifi addicts. But when I am on a 16-hour flight with nothing to do, I can use the wifi do some work. I actually enjoy my work.
addiction is when you're free willing against your long term benefit)