As a person with PTSD, I think that generally, people really, really don’t understand why trigger warnings are important, and in what situations they are helpful.
A trigger warning is there for those of us with such psychological disabilities (and yes, it is that severe that many of us have to go get declared as having a disability in order to participate in things like university classes—especially when sometimes, being enrolled at a university is the only way to get access to treatment). It’s there because CONTROLLED EXPOSURE to triggering material is important in mitigating the impact that PTSD has on one’s life. That’s not to say that we don’t ever read triggering materials. We do, and sometimes it’s actually *helpful* to read them. Engaging with triggering materials can sometimes be GOOD—but only when we’re in the frame of mind to be able to do that. Only when it’s NOT likely to completely take over and make it so that we can’t complete the other tasks that we are supposed to do. If I had adequate warnings, I wouldn’t engage with triggering materials right before I have some sort of deadline, for example.
But most of the time, you don’t get any sort of warning. And saying “oh, well you have a responsibility to research it beforehand” isn’t really helpful, because while I do try to do that, it’s not always something that’s actually possible. For example, say I watch a TV show regularly, and in general I’ve found it to be completely fine, with no triggers. But suddenly, there’s a plot twist which now DOES involve a triggering subject. This is the first time the episode has aired, so I wouldn’t be able to rely on other people to tell me before that comes up. So the plot twist happens and now I’m already triggered, but I have a choice: keep watching, or stop? If this is a show I’m watching as it airs, then I’m pretty invested in the show, so most likely I’ll keep going unless it’s really, really bad. But I’ll start to get more wary of the show, and treat it with greater caution in the future.
And there are of course triggers which are personal, and it’s totally unreasonable for me to expect anyone to know about, or warn me of. I would suggest that the only triggers we should reasonably expect others to care about enough to warn people about are the ones that are very common—especially various types of violence and abuse.
But all of those unexpected triggers ADD UP. And they’re pretty frequent, even if they’re minor. It’s a death-by-a-thousand-cuts type of scenario.
So while you’re not *required* to use trigger warnings, you really should be advertising what sort of content your book includes in SOME way (good blurbs don’t require trigger warnings, because they’re descriptive enough that it becomes redundant information). If you don’t, I’m gonna think you’re either bad at blurbs or kind of a dick (being too scared of “spoiling” your work to adequately advertise what kind of content it contains is kind of narcissistic, in a way—it assumes that everyone reads books for the same reasons, or the same reasons every time), or possibly both. (And btw, I should note that I’m using a general “you,” not talking about you specifically—the blurb for Atlanta Burns was fine as far as I could tell without reading it.)
The situation is different when it comes to blogging and assigning books in a classroom setting.
People blog because they are having discussions within their communities. Not using trigger warnings–or making fun of them–is a passive-aggressive way to marginalize people with PTSD, and edge them out of their own communities. It reduces trust, and makes talking about trauma with the community harder.
Teachers at universities have a responsibility to keep in mind the needs of disabled students, including those with PTSD (who again, may only be still enrolled because they need to stay there in order to get treated at all). That means being flexible enough to have alternative assignments available, allowing students with issues like PTSD to turn in assignments late, having ground rules about content warnings in creative writing workshops, and yes, providing warnings when the assigned material is especially likely to be triggering to students with histories of trauma. I’ve had many teachers not only fail at accommodation in that way, but also create a hostile environment by perpetuating rape myths and making other very inappropriate comments (these not just from literature teachers but also from things like Human Sexuality 101 teachers, who should *really* know better). Being in a hostile environment that you really can’t escape like that REALLY marginalizes people who have ALREADY been victimized. Many bright students just have to drop out because of this.
So… yeah. Trigger warnings are most appropriate for discussion settings like blogs, and especially important for classroom settings. Smart writers can certainly get by without resorting to using them if they’re good enough at blurbs, but the content SHOULD be advertised in some way—or else you’ll just marginalize readers who shouldn’t have been your target audience anyway, and probably get some bad reviews.