But it’s of course a easy way to defend ones point of view :)

As an anecdote, my father is a non-dumb person who at some point started using Facebook out of a combination of curiosity and a feeling of missing out. He can use a computer proficiently for the things he needs and is quite adept at learning to use it for new use cases on his own. Yet he is far from a technological expert with as good as overview of the whole picture. Once I explained it to him over a course of several conversations, he was concerned and stopped using it.