Nope. Not hoarders. Just scarred into an inability to deal any more with the sudden death of their child.
The main one I’m thinking of was a guy my age, killed in a horrible DUI car crash (he was on his way home from swing shift and the drunk hit him). He was an only child and had taken that job to pay for his junior college. His mother never ever got over that. Their house was ‘normal’ in every way. Except do not go into the deceased child’s bedroom. She threw out garbage just like any normal person. Stuff that was her sons wasn’t garbage. His room is preserved as a pristine 1985 time capsule.
I knew a family who’s 12 year old daughter was hit on a bicycle. Her parents kept the room just like it was except they put the crumpled bicycle in the room and hung pictures of the dead body on the walls.
Close to where I live, a 20 year old guy was killed by a drunk driver. This was almost four years ago. The family has put a “shrine” up and are constantly updating it.
I guess some people just can move on with their lives.