I like your analogy! Lol. I'm a car and bike fanatic
Rocket fuel used outside of a rocket has more drawbacks than benefits believe it or not. It's a waste of money, your car will not run properly whether you notice it or not, and bc rocket fuel is more resistant to detonation thus making less power and requiring more fuel to be used to perform the same. Higher octane gas has no more energy than lower octane gas, it just has more anti-knocking properties. There is NO more energy in higher octane gas than lower octane gas.
Yes I truly believe that and my stance has too much evidence and studies to support it to simply dismiss it based on personal beliefs. We can get as scientific as you like but On a more anecdotal level, my buddy who won his pro car not long ago was eating BK, McDonalds, brownies, candy, etc up until about 6wks out from his show.
Salt is a preservative but it's also a necessary mineral to take in. Just bc something is labeled a preservative doesn't mean it's bad. The Greek yogurt you eat, the whey protein you drink, the gum you chew, the milk you drink, etc is all processed whether you realize it or not. You're missing the forest for the trees if you don't understand a singular food item cannot be judged good or bad outside the context of the full diet and the concept of MODERATION. Nobody says to eat chips and cookies all day. You still need micronutrients as well as macro nutrient ratios that chips can't provide. Moderation though, some cookies and chips in an otherwise minimally processed food diet won't hinder your progress.
The more I talk to ppl the more I see "clean" eating as a maskchistic tendency and mental masturbation (not saying you in particular, just generally). Ppl believe the "cleaner" they eat the better their results will be, the better they are than the person who doesn't eat "clean" and they see it as a test to see who can eat the food they despise the most typically being the "cleanest" food. Unfortunately for them they then tend to gorge on cheat meals, get off their diet bc it's too restrictive, and are miserable SOB's bc while their eating chicken and rice I'm having tacos, chimichurris, brownies and whatever else I want with a shit eating grin on my face with NO DIFFERENCE in our progress bc I'm matching my caloric and macro intake to my needs as they are plus I don't eat 6000cals of brownies. I eat enough to satisfy my craving for them.
A gram of Protein is a gram of protein whether you get it from a shake, a steak, a burger, a processed chicken laden with preservatives, etc. The only difference is the micronutrient content and amino acid makeup.
Now if you truly enjoy eating the foods you eat go right ahead. The beauty of IIFYM/DCA is you're allowed to pick what you want to eat. Nobody tells you what you can and cannot eat. And whether you realize it or not, based on you OP here and posts elsewhere, you already follow IIFYM/DCA. You calculate your macro needs based on goals and fill them with foods you want to eat. That's the definition of DCA/IIFYM. No where does it say the foods have to be "dirty".