The film is OK. I watched it after my girlfriend told me about it. Most of the interesting parts are mentioned in the article. The article doesn't mention that Tressa's emergency room trip was almost certainly a consequence of all the sex. Also, while the article mentions Belle Knox, the way she comes up in the film is that Riley (the recuiter) and several of the girls are sitting around a table watching her interview and commenting. It's one of the more memorable scenes.
The film doesn't go into any greater detail about where all the money she earned went. They allude to lingerie and birth control but there's never an explicit breakdown of expenses. The film doesn't mention illicit drugs, alcohol, or any other potential money sinks.
Certainly, comparisons to Uber are ridiculous. Yes, there are similarities-- the same similarities you can draw between virtually any company using new business models enabled by new technology. I agree that the piece is terrible.
The film described sounds interesting, but it has absolutely nothing to do with Uber.