> He obviously meant "is choosing to spend your time reading morally superior", though

Sure. I'm answering it by another measure. Killing is, ceteris paribus, morally inferior to not killing. I'd argue a psychopath is henceforth morally debilitated despite it not really being their "fault" that they're born without empathy. This, in turn, helps me conclude that a murderer is, in fact, doing wrong.

Same here. Someone who can't read isn't inherently less morally capable than someone who can. What reading gives one is the capacity to gain a better understanding of ethics and morals. So I'd guess folks who read books are, on average, more intelligent and at least seeking to conduct themselves in a more moral fashion than someone who doesn't. But that doesn't make spending time reading morally superior to some other activity.