There is this article that discusses how the decline in rigid etiquette codes, like the ones from the 50s, has led to a perceived increase in oversharing. And as a result, people are discovering more ways to express boundaries online.

I feel like this has huge relevance to CWs here.

https://www.theatlantic.com/family/archive/2022/11/people-oversharing-tmi-friendship-boundaries/671970

The Decline of Etiquette and the Rise of ‘Boundaries’

For centuries, strict social norms dictated what people could politely talk about. Now we have to figure it out for ourselves.

The Atlantic
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Today, social media have supercharged context leakage. We all have this idea of who is viewing our content that we make online, but that perceived audience might be different from the real audience. We’re inundated with personal posts that may not have been written with us in mind, and it can feel like an intrusion. You might log in hoping to see a cat striking poses and instead find total strangers discussing their most intimate traumas.
"
@malle_yeno
I've seen, quite often, people I follow on various social media platforms talk about very personal things that I would rather not see or hear. So I've come to really appreciate the CW's on this platform.
@Tobi agreed, I think a lot of value of cw comes less as a way to hide potentially unsettling content (though that is valuable), and more as an opt-in to the material contained.
@malle_yeno yup, at least the thing about CWs being often more of a context tool than anything else is very much a thing in fedi