This film goes into the depths of a place male patrons call "paradise." It is not a documentary about prostitution, it's legality, or whether "selling sex for money" is "bad." It is about the men who buy women for sex. It shows these men, their attitudes, and brings the film maker into the story as a man reacting to these other men.
Sweden, where the film maker is from, does not criminalize prostitution exactly. Since 1999, it has had an unusual law in which the seller of sex (women) are legal and the buyer of prostituted sex (men) are the criminals. Other countries have followed Sweden in having this model.
As a Swedish film maker, I am not surprised that Tidholm is the only one asking about the ethics of the men buying sex and what their actions say about masculinity. This is what the film is about and there is nothing else like it. It asks questions that other documentaries on the topic of brothels and prostitution don't even think to consider.