Absolutely! I think this happens all the time. Nearly every time I eat something I really like, I think of how I would make it and what I might do differently. Unfortunately, it's been nearly a year since I've been in a restaurant due to COVID-19 . . . but, I can come here and get inspired.How about instead of the word "copy," we substitute "inspired by?"
If I see a recipe from someone else, and change one ingredient, then it becomes my recipe.