I can’t believe how many people have commented without understanding the point of the article. I don’t care if you like pineapple. I don’t care if you like it with green eggs and ham. You can’t mix fresh (not canned) pineapple with ham.
All you who think your mother has been using fresh pineapple and not canned all these years are mistaken or stupid. Ham doesn’t need to be tenderized. It’s already cured and cooked. The purpose of pineapple is purely flavor. There is no chemical reason to add pineapple to the ham while cooking. Put it under the ham to soak up fat, salt, and caramelize.