From the article:
You may have read by now the official lie about this treatment, which is that it “simulates” the feeling of drowning. This is not the case. You feel that you are drowning because you are drowning—or, rather, being drowned, albeit slowly and under controlled conditions and at the mercy (or otherwise) of those who are applying the pressure.
Watch the video of Hitchens being tortured.
And Hitchens is given a code word and drop item to end the session. Our 'enemies' don't have that luxury.
And on the whole point of water torture extracting useful and reliable information. Do you think all the heretics tortured by the Inquistion were actually Witches?