VisionQuest literally answers this exact question and it proves why Ultron was the manipulative one, not the "emotionally smart" one. Because Thanos ripped the Mind Stone (Vision’s literal soul) out of his skull, White Vision has all his memories of Wanda back strictly as cold 4K video files. He built the Mindspace house with human versions of Stark’s AIs specifically to help him simulate human connection because his hardware physically can't "feel" grief or love anymore. In VisionQuest, FRIDAY is still grieving failing to save Tony in Endgame, and JARVIS literally sacrificed his own code to save Vision, meaning the subroutines inside his head feel more emotion than Vision himself can access. In 2015, Ultron was an impulsive newborn who scrolled the internet for 5 seconds and threw a tantrum. In VisionQuest Episode 4, Ultron played the long game inside Vision's head, using Vision’s desperation to protect his family to trick him into handing over control, locking Vision, FRIDAY, and EDITH in the mental basement, and stealing Vision's Vibranium body. Ultron didn't "understand humanity" in 2015, he just learned how to exploit Vision's desire to be human 11 years later. #Marvel #MCU