My wife liked it but she wanted to know the significance of the pig (like how he got it; e.g. John Wick the dog was a gift from the deceased wife) or how the wife died.
But I contest that the outlines and shadows, rather than a full picture gives emotional heft; since emotions are often outlines and shadows universal to us all and then expressed through particulars. Whether he got the pig from the wife, right after he died, or he got it years later didn't matter. It became the focal point for any love he had left in his tank. He didn't need it for anything other than something - the only thing - left to love in the world.
Same with the wife. Whether she died from a long illness, an accident, a crime, etc., etc., etc...he was broken from that loss and in that case a loss is a loss is a loss regardless of the particulars. We aren't told and I think for the better.
Plus it gives more weight to his intersection with the son/truffle dealer and the father/rare food king. The emotions he is able to elicit from himself and with them that may have long been dormant and almost the extremes food can have between deprivation to satisfaction to gluttony/greed did better to bounce around in an amorphous, unexplained universe, IMO.