You are in a position to introduce them to the alternatives that are out there e.g fedivse, and talk to them about the issues they WILL face, bring them up to see a phone as a tool, that can be left at home and switched off while they actually explore and play, maybe, at some point buy them a proper camera, (well more basic digital camera) so they can take photos, without all the added issues of doing that on a smart phone.
Hopefully over time they can learn that the fedivise is a 'cool' place to hangout, and they are in control of their destiny and data. Very empowering.