Implications...
- Pegassus spyware exists. It can be put on a smartphone to compromise the supposed privacy of Whatsapp messages.
- NSO have Pegassus so it is possible or even probable that other groups have something similar.
- Smartphones are therefore not suitable for highly private communications.
- FB are concerned that (more) people will keep private stuff off their smartphones which will damage their business model.
- If FB can show that NSO are criminals then they hope that most FB (and subsidiary) users will go back to trusting their systems.