Clearly, people will prefer their own in-group. I think, however, you just made the parent poster's point.
People will often prefer their own in-group to themselves.
Thus, it depends on how one defines the in-group, and one's own interests.
Looking at Coldtea's earlier comment:
>It's either pushed to us by greed, or given to us as a substitute for things we'd rather have (no friends, but here are games you can buy), (no work-life balance, but here's Netflix you can watch when you're home exhaused from work), (no community, but here's social media, go argue with strangers), etc.
showing how the 'in-group' has shrunk. Used to be a larger tribe, now you could be lucky to consider it an atomic family.