There is always a well-known solution to every human problem - neat, plausible, and wrong.H. L. Mencken
Common decency should come naturally from the ones inclined that way and the rest don't probably care about such lemmiquette.
Sound like you're describing a sense of being immune to advertising or it having the opposite effect on your consumer behaviour. I believe the term for this is "self-deception"
Remember the bitcoin bubble?Which one? Depending how you look at it there's been at least 3 and each peaked higher than the previous one. The current value if far above the first bubble.
Common decency should come naturally from the ones inclined that way and the rest don't probably care about such lemmiquette.