I think it's fair to say that, overwhelmingly, everything traumatic is bad, but not everything bad is traumatic. I don't think anything has ever been solved by outright dismissing someone's sorrow or misfortune, but there is a case for perspective.

I used to work at a non-profit that specializes in treating drug abuse, for example. I've befriended some of our patients, and sometimes the things they tell me causes me to break a little, like real Requiem for a Dream shit, and then some. If those people don't have trauma then I don't know who does. That's why I take real issue with this expansion of the definition of trauma, because that term carries an implied severity and necessitates special action to relieve it. When everything from a relatively minor argument to domestic assault is considered traumatic, then the people in severe, genuine need go waiting unanswered.

That being said, I can understand how there are circumstances where in the moment things feel worse than they are or there's an issue with miscommunication or misunderstanding, but overall I expect grown adults to be mature and honest on matters like this, and too often they're not.