I have had a few experiences that have left me with certain traumas, that are triggered by different subjects. Whenever I see a thread title with trigger warning in the title, I skip it because my trigger is fairly common and even though it may not contain my trigger, I do it to be safe.
I also know that some people are triggered even by seeing a word or the name of the trigger, which is why people don't reference it in the title. However as there are so many triggers out there, AIBU to think that it isn't helpful to anyone to say 'trigger warning' when that gives no idea of what the trigger actually is, and that it might be better to say what the trigger is in the title instead, e.g. 'trigger warning: domestic abuse' or something similar?