A phone isn't incriminating anyone unless you're using it for committing crimes or bringing it with you when you commit crimes and even then how many times have we seen law enforcement use a mobsters cellphone location to make a case? If you're talking on the phone about criminal acts you're just stupid and deserve to be caught.

No one is posting "just broke Tony's knee caps because he owes me money" on social media so simply having a account isn't incriminating anyone either.