Here’s how I think about Content Warnings: they’re for something you post that’s out of character and might create bad surprise for a reader.
So if you talk about [blank] all the time, then anyone who follows you knows that’s what they’re getting. No CW needed.
But if you don’t usually talk about [blank], and that subject might be sensitive, then it’s a kindness to warn.
This is just the same as a podcast that says “warning, we’re gonna talk about [blank] today” at the start.
@fraying I don't disagree with you, but I think that people who are seeing your toots on a local or federated timeline, especially when boosted, may disagree. They don't see you all the time.