How? Popular as Fields of Fire and Shakespeare may be, people aren't born with a knowledge of the works before reaing them or getting spoiled. Assuming someone didn't spoil them on the plot, they would still be going in relatively blind reading it for the first time and could very well get their PTSD TRIGGERED by something they weren't expecting. I think the SJWs are stupid and there is a limit to warnings that can be communicated, but we shouldn't let a fringe group of tumblrites determine policy towards mental illness because being contrarian will TRIGGER liberal sjw betacucks.
Psst, its called a prologue. Assuming they don't need help for that part too.
I also just felt like typing "betacucks" because it gives me the lol's.
Do they have prologues now ? I don't recall my Shakespeare plays having one that covered what material would be shown in the play. In any event you're advocating something that achieves the same as the trigger warning.