It does not include me, no, her content is trash. Again I see where you're coming from but I think you're applying it selectively, and if you applied the same reasoning to your own argument it would come apart. If you're paying a girl enough to "only" show you her boobs then that's all she's gonna show you. Liking feet (not foot fetish, mind you) is EXTREMELY common, ranging between 35%-50% of males, it's a lot of people whether you like it or not and in all likelihood it's always been like that as you see references regarding feet being considered attractive in all sorts of culture. Hell, in some cultures HAIR is considered sexual enough that nearly all girls hide it. Don't like it, move on. And if enough people jerk off on it then it's porn. I also suspect you might be drastically overestimating the amount of girls that both make and could make a living out of this, this goes for popular girls too. Like someone else already mentioned most girls don't have feet that look good enough to even convince 100 guys to buy a $5 foot pic (with would be $500 doing some quick math, which is average wage in Cambodia but most of these girls don't live there)
You can make a job out of any action that someone is willing to pay you to perform. Whoring on the internet constitutes as that.