My takeaway is the younger we are the less impact it has unless there is a stronger connection.
Now that I'm older find it affects me more. Hopefully, you are okay, thank you for sharing...
The less impact it has at that point in time, especially if it was a natural, age related death didn't come after a long observable illness, a catastrophic accident or a murder as in the case of my #1 DH. My boys 'reprocessed' his death, the loss repeatedly as they grew to adulthood, most often as they reached various stages of development and had learned more about how various deaths come. At 6 they questioned why their Dad died when not all gunshot wounds kill. i consulted the autopsy and explained in simple terms.
When they were about 13 a cat we'd had since i was pregnant with their half sister in 1983 died of kidney issues. My son Seth who had witnessed the shooting got very quiet and withdrawn. When i was able to draw him into talking about his feelings--turns out the death of the cat triggered undealt with grief about his Dad--he hadn't wanted to mourn openly because he knew how i felt about that 'Maxicat' and didn't want to add to my grief. i explained that somehow sharing grief kind of lightens the load. For several days each day after school we'd sit and talk first about the cat and then he opened up more about his Dad.
For that matter when my/our grandson was born it was one of the most bittersweet moments in my life. i dearly wished Dean (and anglicized diminutive of his actual name that he went by in US) was alive to see Liam born. It didn't help that 1) Liam's Dad, Owen, smiles like his Dad and 2) they gave Liam his Grandad's official Hindi name, Thakurdeen, as a middle name. That followed what we did with the boys--simple first names but middle names were their paternal grandfather's and great-grandfather's. Owen had mixed feelings too.
And i reprocessed the loss again when an adult niece of Dean's asked me in a PM on FB (i'm in contact with several of his relatives there) what exactly happened to him. While they told stories about his personality, talents and flaws, they had never explained to any of the younger generation (contemporaries of my boys) exactly what had happened.
i've said elsewhere, we have running 'narratives' of our lives in our heads, we review and sometimes due to new info or simply our own personal growth changing our perspective have to revise them.