That's a very insightful point, but I'm not comparing the way my friends interact with me to the way I interact with them, but rather the way friends in a lower social class interacted with me vs the way those in a (sort of) higher social class interacted with me. I feel like not having much money meant that there were ways in which I was out of place among my childhood milieu too. And yet somehow, I don't recall ever being made to feel out of my place by anyone.
This is obviously partially attributable to the fact that everything about my parents' and my mannerisms fit in well, despite not actually having money. But I feel like the actual (significant) financial gap between me and my social circles provided plenty of opportunity for social friction, and I literally don't remember a single instance of it coming from that group.
More importantly, it would be predictable for people to enforce the advantages that a rigid class system affords them, but it's unexpected to me for those getting the short end of the stick to be enforcing the system more zealously (albeit in a limited context) than those benefiting from it.
(It really bugs me that my comments keep referring to class as if it's a real, important thing about someone's character, but I guess that's sort of the point of my comment: the perhaps-naive disillusionment that I felt upon realizing how insistent most are on enforcing it)