By all means see how they go for a couple of attempts on their own but teach at a realistic work vs reward balance FFS. My 9 year old would have tried once or twice and then looked up a YT video or asked her older brother instead and come back in 2 mins with a working solution. Although she and her brother before her have been using a can opener when feeding our dog for years at that point anyhow, shocker I showed them once and off they went in 2 mins.
There's many ways kids can problem solve. To suggest 6 hours on a menial task such as this is rewarding is poor parenting to me.
I wonder if we should get the dad to source his own meat on a hunt as well as grow his own vegetable from seeds etc; source it, prepare it, cook it and eat it to satiate his appetite. Few people are capable of hunting/gathering/cultivating and preparing their own food well. After all it's a teachable moment.