You may be underestimating how many small bits of 'fake' are common. A facebook profile is much more accurately described as "how someone wants themselves to be seen" rather than how they are in reality. Some of it is self-censorship, some is self-promotion, some is subconscious, but the cumulative effect is such that the reality show analogy is quite apt; it's based on real events, but edited and filtered into something misleading.

Think about it this way, an autobiography is probably mostly true, but you're going to read it with the understanding that it's not an impartial, objective viewpoint.