I think OP is asking for the opposite. Platform-level moderation practically has to happens server-side because clients can just lie about having done the scanning.
I believe the ask here is for receive-side moderation, similar to an ad blocker. If the messages are encrypted, the platform can't moderate them. Consumers would do their own content moderation locally and discard/hide/clickthrough/etc content they don't want to see, without actually removing it from the platform.
Eg I'm sure the video of the UHC CEO getting shot made the rounds in some group chats, and that would be hard for some people to see. These kinds of filters would let those users hide the video on their messenger without impacting anyone else.
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I think OP is asking for the opposite. Platform-level moderation practically has to happens server-side because clients can just lie about having done the scanning.
I believe the ask here is for receive-side moderation, similar to an ad blocker. If the messages are encrypted, the platform can't moderate them. Consumers would do their own content moderation locally and discard/hide/clickthrough/etc content they don't want to see, without actually removing it from the platform.
Eg I'm sure the video of the UHC CEO getting shot made the rounds in some group chats, and that would be hard for some people to see. These kinds of filters would let those users hide the video on their messenger without impacting anyone else.
Exactly correct, and excellent real-world example!