Another way to look at it is they place their ideals and values above the group's. They like the group but they don't need the group's standards or values.
In some groups, this works very well, with others' - there's simply no understanding at all of this.
You are free to dismiss me as the arrogant lone-wolf, but that just isn't accurate.
Some groups imbue consensus with an inflated value. These groups don't take well to differing opinions or alternative perspectives. Especially such that go against a/ the consensus.