That is not my experience. I have always been conservative on this issue, though admittedly I’ve become more moderate and conflicted about it over the years, and I have never been treated with anything but welcome in Episcopal parishes. The institutional leadership of the denomination has treated some dioceses and parishes harshly, but to be fair these were folks who clearly intended to leave the denomination (or at least wanted to wall themselves off from the rest of the denomination) and wanted to take their property with them. People like my former bishop Ed Little who are conservative on sexuality but are gracious and collegial in how they relate to more liberal bishops have not had much trouble that I’m aware of, though I know that Bishop Little wonders whether there will be a place for people like him in a generation.
So the attitude you’re describing is certainly present in some quarters and may grow in the future, but I have not encountered it personally except online.
My rector from New Jersey (actually technically not my rector since I never formally joined her parish, precisely because of my discomfort with the direction TEC was heading) was genuinely indignant when the local liberal (United Methodist) seminary did not give me a job (not directly connected to this issue but clearly connected in general to my more conservative approach as a scholar). She said, “if they are really liberal they should be inclusive of everyone, including conservatives.” And she was quite liberal in her own theology. Similarly, the priest of my wife’s parish here in Kentucky has been nothing but gracious and affirming to me, although she knows that my theology is significantly different from hers (I think she may actually exaggerate how conservative I am, or at least how closed-minded I am about it, since she hesitated to recommend a book by Richard Rohr to me). In between I belonged to a parish in Indiana (under Bishop Little) that was quite conservative.
Edwin