I think the line that is not being drawn is including all forms of sex work as sex work (call girls, prostitues, pornographers, strippers, phone sex operators, etc.) I'd even go as far as to say that sexologists are sex workers.  There is a ridiculous heirarchy in the sex work field and that continues to marginalize prostitutes, especially street prostitutes.

Yes a camera does make a difference from a legal perspective in this country. It's based on "community standards," which has it's own set of problems, in my opinion. It's also based on capitalism and right now pornography makes more money for more people than prostitution does. After all, we live in a capitalist country where many of the laws are created to protect wealthy people with resources versus under-resourced and oppressed groups. Plus, a majority of people who consume and purchase pornography are not the people you think. Those people need to be "protected" from well judgment, other communities can be judged all the time (you can do the math to figure out which communities these are!).

PBS and Frontline had a great documentary that really highlights the connection between class, pornography consumption, and supply/demand. I suggest taking some time to watch it and check out the website they created for the program here.

Until people realize the inclusivity of the term "sex work" versus perpetuating a heirarchy there will be problems. Until people realize that there are some sex workers/specifically prostitutes who CHOOSE to be sex workers because they want to (not only because they have to or it is the only option for them but because it is the BEST option for them at this time and not vilifing them) and supporting people's decisions and meeting them where they are at (aka: harm reduction) there will be this issue. When people realize that it's not just women who are sex workers but people of all gender experssions and identities, then we can have a better conversation. When people are ready to realize the role racism plays in sex work as well as the intersectin of gender, disability, class, and ethnicity (i.e.the examples you used Hugh, Jenna et. al are all White people who are able-bodied) then a more fruitful discussion can occur. 

I consider myself a sex worker. Not just because i'm in the sex field, but because I too have worked with pornographers and major pornographic magazines in the US. I don't think there is a difference between the work I do and the work that any other sex worker does, it's just in a differen form of work but sex is at the center and we get paid for services.