I remember being about 13 or 14 (oh yes I can remember that far back....) and going back with the family to my Grandfathers small house after the burial............
Aunties and Uncles alike
shame on them, ransacked the cupboards looking for hidden booty - which went down to the very low level of them finding gifts grandparents had been given, not even unwrapped, that they argued between themselves as to which 'loving' daughter/son had given it originally..............
So it's not a new bad trait by any means