These days 74 is no age at all. If he cannot cook, what is to stop him going out, buying a ready meal and putting it in the microwave.
If, heaven forfend, you were to become too ill or disabled to do all the cooking, he would have to learn and learn quickly. Easier to learn to cope aat 74 than 84.
I am sorry I am really hardline on issues like this, which is why DH takes offence should I ver suggest that there is food in te house that might do him for lunch. He is nearly 80.