Devil's advocate here - It could also be the case that feet act like a gateway drug for content creation in some cases. Maybe the chick you follow, but who does not have an OF, can be convinced by the feet weirdos to do feet content. Nothing wrong with that, right? They show off their feet and make a few extra bucks doing it. They don't even need to show their face, right? So they start the OF intending to do feet. Well, now they get a taste for it. Easy money, and all it takes is a few minutes of work to take and upload the photos? They wonder how much more they can make from something a little more...just a bikini, right?....you get the idea. One thing leads to another - easy money has a weird way of talking to people - and next thing you know, a chick who previously vowed to never do OF is posting videos of her shoving a massive dildo in her ass for $15, and it all started because a year earlier she was convinced that feet were harmless.