He's taking advantage of the public's frustrations with their privacy being invaded by FB to propose a tool that would ultimately be made in his image.

The only way a political leader or party should get involved is by popularising existing open and ideally decentralised platforms and suggesting laws where non-governmental semi-randomised working groups review source code to check that privacy and security are being maintained and not coerced.

but of course, its not about democracy it's about rightthink