Yes, I have come across the view that a poly relationship can't be "real" - real can only be monogamy.
It goes along with the "so you're afraid of commitment" jibe. Once folks actually start seeing the details of our lives, they realize that we are actually more committed than a lot of monogamous couples are.... levels of commitment really have nothing to do with it.
"Listen, or your tongue will make you deaf." - Native American Proverb