Yes your neighour is right, if they do not have any account with any website or social media page.
Social Media
Tech Savy user can actually use the internet to get information without giving our personal detail or even create an account with any online media, a tyical example is the incongito mode, with this one can use the web without being noticed.
Learn more about social media here:
https://brainly.com/question/3653791
