Policywonk, no, I don't "include those suffering from drug addiction, poverty and the legacy of child sexual abuse in the 'free choice' category". These are women whose choices have been constrained by circumstances to the point where they really have no choices, and, like you and dittany, I don't believe they can freely consent to paid sex; perhaps they can't truly consent to anything, though. I don't deny that these women exist, and I don't deny that their lives are awful.
However, I do argue that just because these miserable women exist, it doesn't mean that happy hookers don't. One of the things that Pye Jacobbsen, the Swedish sex worker whose video I linked to earlier, said was that radical feminists (whose viewpoint/dogma has been accepted by the Swedish Parliament) assert that all paid sex is rape and that therefore, all prostitutes are rape victims. This is regardless of prostitutes themselves saying, "No, we're not."
The response from the radfems is that, "You're not aware of your own oppression". (Well, maybe that's because it's difficult to feel oppressed when you're earning as much in an hour or two as it might otherwise take a week to put by...)
If a prostitute still proclaims her consent, despite having been offered enlightenment vis a vis her condition, she is told she has a "false consciousness" - "You're in denial of your own abuse." That one comes with the subtext that "You'll wake up one day and realise the horror of it all." There are often prurient references to "prostitutes get PTSD" around about that point in the discussion; a sort of, "You'll get what's coming to you" that has unpleasantly misogynistic undertones.
Finally, if you can show - as Belle has done, as Pye does in the video - that you are an intelligent, educated, thoughtful woman, who has freely chosen to work as a prostitute, the radfems dismiss you as "not representative" - the "That's only one person" approach that dittany immediately took. The words of Pye Jacobbsen, despite 21 years as a sex worker, 15 of them as a prostitute activist, don't count, because she's only one woman.
Every prostitute is only one woman. Does that mean we discount the women who say, "We are not abused", because they don't fit in or agree with the radfem dogma?