Just my 2 cents worth. To me the last sentance does imply a threat of violence. If the lady says "no", what other option does he have? Call the cops? I think not. Hence the reason for the "hangaround" (security) some ladies have as mentioned in #1. LOL
Most of these questions are pointless and a waste of time to answer as you can assess most of this stuff before paying. If you pay upfront even though you are not comfortable with the situation (the concerns he asks about) then you are a moron.
Lastly, the guy has nothing to complain about. Whats he gonna do, go to the better business bureau? Call the police? You get what you pay for in this business and the legality is you are paying for a massage or companionship, not sex.
This guy probably has sores himself, or perhaps he smells or perhaps he was beaten badly with the ugly stick. Most likely he is just an asshole and I would not be surprised if he gets treated poorly (if his questions are based on experience).