1) People who don’t derive pleasure from reading do generally see it as an affection, because they can’t understand the appeal outside of apparent status-signaling. Reading, and discovering new material to read, is in fact an intensely selfish pleasure, but it is not a natural pleasure; if you didn’t get hooked in childhood, it’s probably not possible to convince you, and so you will forever see someone offering you a free book as some kind of hostile, elitist signal.
2) There are a lot of reasons why LFLs may not always thrive in low-income neighborhoods (although there are quite a few in mine, and it’s no Beverly Hills), but I would suggest that it is not because the residents exist in some higher state of authenticity.