I’d watch the ending of Haunted again. If Zavala has ‘gotten over’ his family, why would he act sorrowful when the Memory of Safiyah leaves? There’s also the fact his family isn’t the focus of his strain within the DLC and he DOES have a second ‘insecurity’. When he comes face to face with the Witness, does it tempt him with his family again? No, it attacks his lack of faith in the Traveler by attempting to get him to sympathise with the Precursors within it. That they have both been abandoned by the Traveler. Zavala was shown his family whole again, something that puts him on the back foot. Communications from the Traveler seemingly asking the Guardians to sacrifice their lives for it and everyone ignoring his suggestion because they believe he’s too unstable rile him up until he decides that he’s had enough and pushes forward in a suicidal fashion, determined to give his life if he has to There’s also the fact that despite being shaken Zavala still carries on. He correctly deduces that the Statues are attempting to communicate because they want to help, a lead no one was willing to follow up on until Zavala went AWOL. He actively chose to learn Stasis to stay in the fight and led the Coalition forces forces against the Witness. Hell, even without the light he still fought with the others to the ritual site. And a final note, because you make a point of the passage of time. Zavala still visits the graves of both Safiyah and Hakim, as well as Safiyah’s descendants. It’s not something he’s every forgotten or cut himself off from.