Comment by pbiggar

We work on helping people move to Signal from WhatsApp. It'll be easier once they have a Communities feature, as WhatsApp is very far ahead there.

The main advice we got is that although you need to migrate individuals, the main focus should be on migrating channels. If you have a family group chat, that's the target. Tell people about how Meta spies on them, etc, and then support everyone in the channel to individually set up Signal if necessary.