Steak, respectfully, you don't know what you're talking about. You're mixing well-known truths with woo woo nonsense in an attempt to muddy the goalposts so much that everybody gives up and go home.
For one thing, please leave Deoxit out of this dumpster fire. Caig makes fine products, and they don't deserve to be mixed up with this train wreck.
You are correct, yes (in the same way the proverbial dead clock is right twice a day), Deoxit does have an effect on sound quality, sometimes a profound effect, but it achieves that effect in a strictly mechanical fashion. It's a product that works as advertised, not a tweak. It works by correcting a situation. It works not by adding something - it works by substracting something, namely oxidation and grime that cause a degradation in sound quality in potentiometers and function selectors. It restores factory conditions. It adds nothing.