The article writer is just saying to keep in mind that how your app behaves, how it looks, how it presents data, can have a real effect on its users, so you should consider the implications of your decisions.
With the decline of civility, asking a woman out and being rejected is no longer, "I'm sorry. I appreciate you asking but I'm just not interested" to, "Fucking loser! Why would you talk to me? Get the fuck out of here."
He is currently facing a Class 1 misdemeanor charge of harassment by computer, which carries with it up to 12 months in jail and a fine of up to $2,500.
I'm kind of surprised they aren't threatening him with much harsher penalties. Not that I think they should. I'm just surprised they aren't.