This is a common error, often attributed to people mistakenly thinking that the word "tip" came from "to insure [sic] promptness". In reality, there are a couple of possibilities for the derivation of the word "tip", but that isn't either of them! One possible source of the word is from Old English, where it meant "to pass from one to another". Another possible source is more ancient, having to do with "tipping" the scales in favor of the customer -- having the customer able to determine precisely how much the service is worth surely does that.
And that's the real foundation for gratuities in today's society, in the Americas, the Middle East, and Africa. Service is provided with the expectation that customers will pay for a substantial portion of the cost of service through the gratuity. While the amount of the gratuity is up to the discretion of the customer (within reason), the obligation to provide the gratuity is not up to the customer's discretion.
Me thinks you spend too much time researching on Wikipedia. The origin of the "tip" may have been originated 500 or 1000 years ago, but now, in current times the average person thinks they are rewarding excellent service. It doesn't matter the origin, but rather the current day reason. Most people want to think today they are rewarding special efforts. So... let's look at a different way to approach the whole service thing. With Disney... everything is hoped to be perfect. So I would like to see EVERYONE... all personnel, brought into the Disney family, not needing any supplements (or total support) from
DVC members, having a sense of being in the family, and being taken care of like all the others. Then we would have no concerns about who is this person... do I have to pay for their well being... how much do I give them. As I said before I would prefere to pay greater MFs than to be served by people that rely on gratuities. People that rely solely on gratuities are needy and act as
such. I want all DVC personnel to be taken care of and not feel the need to pressure any DVC member for a tip (regardless of whatever tip ever meant). As Members, as owners, let's treat these people like lifeguards, activity CMs, or Check-In CMs.. let's make all DVC CMs a part of the family, and let's get rid of the pay by tip routine. Let's be different.