This won't be a popular reply I'm sure, but why worry about what others "are" or "are not" getting?
Sounds like a "beat the Joneses" or " I am better than you" attitude is showing here.
I fully understand those that are upset because they didn't get the nice welcome. Everyone deserves to feel special.
Who here would want someone elses family to have any "less" of a special time than yours? If it makes you feel good, than it probably might make someone elses trip a little more magical too.
Disney saying "Welcome Home" to non DVC members doesn't in ANY way lessen your enjoyment or your particular trip. Instead of wanting your greeting to be better than theirs, take a minute to watch their happiness when hearing it, just like you feel when you hear it.
Greed, jealousy, envy and hatred are learned (and optional) emotions.
Sean