Maybe I'm wrong, but I have never seen Apple or Google suggest that someone use the parental control tools on a vulnerable adult person's phone to prevent them from hurting themselves. They have never run such a campaign for awareness or changed those tools to make them more palatable to controlling adult's phones (these tools are always sold as things to enable on a child's device). So no, I don't think we've started with that. We've started by adding some toggles and scary warning, and I agree that hasn't worked. I never suggested we stop trying, I suggested we allow the trusted owner/admin of the device to be more easily assigned to someone that person trusts, not just forcing Google into that role without consent.