I have spent my entire life around cisgender people. I am quite aware of what it is like. Once I began to transition, I found that those people did not well understand what I was going through, and I found a home and understanding in people more like me. To finally have space from a world that forced me to display myself in a proscribed way has given me the peace and freedom to discover who I really am. And this is a wonderful thing.
That you view one's desire to move from isolation to acceptance as an act of exclusion and chauvinism shows a deep misunderstanding for what it means to be in community with others. I worry for the cynicism this seems to reveal, and I hope you find peace in others in time.