I think the ending hit much more viscerally to me
Seeing everything (people, familars, places) "recover" (to an extent) over the time, and then to have those same things leave one by one. And the mc feeling like "but you can't leave!" Not wanting things to change for many reasons but one being fear.
And having to be told/learn that they'll be okay on their "own" (they'll still have their mom etc. But you get my point) The world will need to keep spinning
I think it also ties back in to when Mc is speaking to his father's familar (not good with names) and its acknowledged they'll have to leave, and when asked if he'll come back the answer is uncertain but the lynx "hopes" he can