Just use the dish you’re going to eat from if you’re really that lazy. This isn’t rocket science.
You're assuming the spoon has something I'd want to mix with the main dish on it, that I'm going to eat the food I'm cooking immediately, etc.
This only seems like a problem if you’ve never encountered an actual problem.
Little annoyances add up and small improvements to one's approach to dealing with things can add up as well. You know what makes those "actual problems" worse? Having to deal with a bunch of minor irritations at the same time.
Kind of weird that you seem to think it's ridiculous to want to improve anything that isn't a matter of life and death and earthshaking consequence.