We're still primates. We still have tribes. If you want to belong to a tribe you have to look and act pretty much like the other members. Only so much deviation is allowed, in any given tribe.
If you want to sell something to someone, you have to look, talk and act like you belong to their tribe. This helps them trust you.
If you want to become a more powerful member of your own tribe, you need to look and talk and act like the more powerful members do, so they will look at you and say, "Hmmm, s/he looks and talks and acts like one of us. Maybe we should let him/her join our exalted ranks."
In other words, one of the keys to climbing the ladder is: Always look and act and communicate like the people one rung up from you. This increases the chances they'll trust you enough to let you in.
It's just anthropology. We're wired that way. No amount of complaining will change that.
--
.nosig