Please, for the sake of everyone suffering from actual PTSD: Don't. It's hard enough already for victims to communicate what difficulties they are facing without people watering down terminology like that.
How else are we supposed to learn from each other, voice our opinions, point out our mistakes to each other? For me, this is communication. And currently 8 upvotes seem to agree with me and my request. Feel free to ignore it, or consider it, for your own use of language. But, sorry, to me, you're the one acting like a jerk and trying to "police", not me.
If anything, it's a net positive people are talking about mental health and recognize different ailments such as OCD, PTSD, and others.
I disagree that it's insensitive to those or have the illness. If it hurts you when people use PTSD as a literary special effect, I invite you to articulate why exactly it makes you feel (however it makes you feel - I don't want to put words in your mouth). I get the sense that some people take offense the same way a religious fundamentalist doesn't want to hear their Prophet or Messiah used disrespectfully. The source of the anger is built on faith and dogma.
Sorry just teasing.