@jkirkendall I see other people have already said what I would have, so I'll just add that expecting you to put a content warning on your vocation was unreasonable to begin with.
Personally, I only put content warnings on stuff that I know is a trigger for a lot of people, such as sexual assault, domestic violence and abuse, and so forth, and then try to be as descriptive as possible without being graphic.
Something like 'SA' may ring a bell when you've been here for a while, but is useless for anyone who is not familiar with the jargon, for example.
And yes, I always add any widely used hashtags for the topic, never 'break' words by putting weird characters in them, because that fucks with people's filters, and I have a pinned post with the hashtags people can expect from me.
Beyond that it's really the reader's responsibility, as only they know what works best for them.