Maybe you are, but:
- University boards are using them to hunt for excuses to threaten teachers' jobs,
- Students new to activism use them to feel like they've won something by attaching a warning or excluding content,
- Lawyers love them because somebody might sue somebody,
- Right-wing commentators use them to attack universities for having left-wing biases,
- Old people use them to insist the young are soft,
- And the university system at large uses this issue to steer students away from "silly, unproductive" humanities tracks.
Meanwhile, psychologists generally agree that, outside of certain broad categories(rape and explosions), actually triggering phenomena are usually very specific to the individual and hard to actually filter out (say, the layout of a room or an unusual smell).