I work in the fashion industry and will give you my point of view. You are correct on some points.
First of all : The most desired job by kids today isn't doctor or astronauts but "influencer" or model. The respected fashion industries are VERY selective with the models they hire so a lot of girls will never make it but they do not accept that. they think that all it takes is good photos or videos and fame will follow.
A lot of these girls are really dumb and if a photographer has 20k followers, they will think that he is worth working with. Girls don't spend time researching what makes a good photo so often they base their judgment on follower counts... trust me, i've seen a lot of girls who say 'i only shoot portrait and clothed' but when a 20k photographers asks them for a nude shoot, they do not hesitate a minute to get naked. i've seen it so many times...
Secondly : Women are as sexual as men... Society tries to paint women as innocent creatures being taken advantage of... a solid 85% of the women i talk to tell me that they would be ok to do a lingerie/boudoir photoshoot to feel more confident and to get out of their confort zone. Women find lingerie more sexy than nude so in their mind, shooting lingerie is hotter. They would definitely do it if nobody finds out or if the pictures don't get published. That is what's stopping them all... So if you are a photographer and you tell them a good story about the pictures only being published on a private website in eastern Europe, they feel like nobody will find it.
Now i've seen many girls willingly do nude shoot, being confortable during the shoots and enjoying it but when they start posting the pictures on instagram, the comments from the BF, family, friends,... make them delete everything. The friends and family are the ones shaming the women.
So a girl that is like "i'd have sex with a frat guy for free, so why not doig it once for money if nobody finds out..." falling for a fake profile that looks legit.
If you search on instagram, you'll see some average girls being "signed" to modeling agencies... if you look deeper the "agency" is based in Turkey, Cyprus, India for girls located in like western europe... like if an agency in india would be able to find you a job in France, wtf ? But those average girls DREAAAAMMM of being discoverted and feel like those agencies offer them the chance that they "deserve" but that nobody is able to really see. Remember that those average girls go on tinder and get 50 matches per day, why wouldn't they think that they are hot as fuck and model material ?
So were they willing participant ? yes probably... were they lied to ? most definitely... Could they have avoided it by being smarter and having smaller egos ? 100%...