Probably, except for one edge-case. I sometimes reply to entries or comments in other journals, in part to email myself a copy of them because I want to rememeber them. It's unlikely to apply to the "triggery" things but might well apply to contest or game things if they also have a fiction or poetry bent. Being sent only the warning, because I'd already seen the content, would not meet my need there.

It's not something I do often, however, and losing it in this case would be an okay compromise for me. What I don't know is if there are others who do something similar more often and might be more heavily affected.