The article is not about taking photos, it's about how relationships are mediated and affected by (e.g.) someone's Instagram feed.

It comes down to an essentially Sherry Turkle-esque observation: when a relationship is mediated through images on social media, each fresh image doesn't so much affirm the relationship as assert the continuing independence and individuality of the poster. You could look at it from an information theory perspective: showing people what you are up to through digital images is very different from doing things with those people.