I'm fine with throwing away the line and all other self defeating references about Scientology being a "religion," but what's your point in then quoting Hitchens about how bad religion is?
Attributing the deceits and abuses of Scientology to "religion" misses the mark and, ultimately, helps Scientology.
I don't think anything will help scientology now ... it's screwed.
You and I may not like it but 'technically' scientology is (known as) a religion these days and getting too precious about what I'm calling a throw away line seems petty to me, he (Louis Theroux) didn't make this movie for us (exes) and apparently made sure that Marty didn't get to feel too comfortable perhaps to make that point clear to the real audience.
Whether we like it or not we (exes) are almost certainly viewed with as much disdain as current culties by the average person (I know that's harsh but I believe it's true) and that doesn't bother me at all, I'm just very happy watching the boot going into the cult with such regularity and ferocity by people who a few short years ago wouldn't have dared to look sideways at the cult.