Sure it's compelling but it's below the bar of "you HAVE to do this or you will suffer and have the shakes and be unable to function for the next couple of days" so I'd say that's within the realm of just being responsible enough to refuse doing something you don't really want.The thing about ecstasy is that it massively ramps up your pleasure centers, so that any touch is incredibly sensual. It's why, if you ever see anyone at a rave or whatever doing things like blowing Vicks Vapo Rub into each other's faces, it's because of the cool, minty sensation just gets ramped up to 11. And it can become addictive in that when you take it, if you're not ON it, pleasure can be....less pleasurable. Some people can become so used to taking it, that things like sex, without the drug, become basically numb. I'm not sure if it actually physically addictive, and a quick google search seems to suggest the studies are of mixed results, but somewhat leaning towards "eh, not really, or at least not as bad as other drugs like cocaine/etc." But the desire to feel those peaks of pleasure, when your brain centers are overstimulated like crazy, can be very addictive. So, telling a young woman, in her teens (already a horny ball of hormones on any given day), that she can have more of that really fun drug, that makes her feel great, AND makes sex amazing...if she's willing to fuck a dude for money? That's a pretty compelling offer. Money, sex (that will be really good BECAUSE of the drugs), and drugs. 3 of the biggest motivating factors in human history really.
I mean, someone could just be really good at sex and have that be the temptation that he provides women he hits on, are we gonna have compulsion accusations that claim the dude's dick being 12 inches as the cause next? It's really not a logical approach.