It is technically a movie, sure. But more accurately, it's the conclusion to a show that's been on the air for almost 20 years. It's not a movie made to stand on it's own. Posting it to a movie sub makes as much sense as posting about ancient Roman senators in a politics sub. It's technically politics, but you're not going to get very meaningful discussion because it's not what people go there for. The only people who would watch this movie are fans of the show, and even if a non-fan watched it, why would I give a shit about their opinion of it? They aren't going to get it.

Are you starting to see the issue?