“Lehmiller even went as far as breaking down the sexual orientation of his participants, explaining that 18% of heterosexual men have fantasized about feet before, compared to a very small 5% of heterosexual women. Twenty-one percent of gay or bisexual identifying men and 11% of lesbian or bisexual women also shared their experiences with foot-related sexual fantasies.”
Having a fantasy is not quite the same as having a kink but this should give you some idea. My assumption is that most kinks are far less common in women because (on average) women have a lower libido than men.
I’m also guessing that the crowd of people willing to send unsolicited inquiries in response to a photo posted in a medical context is going to skew even more male than the population of people with this kink.
Based on my reading, this is the consensus view of experts and it has fairly strong evidence supporting it. However, it is not universally accepted and there has been a lesser amount of conflicting research. For an alternative viewpoint, see: https://www.lelo.com/blog/sex-drive-men-vs-women/
Either way, this is a population level trend and there are plenty of exceptions.
I am a lady and absolutely hate feet, even my husband's. And I'm starting to cringe that my preteen son's feet are starting to look like man feet...
I'm confused, I didn't think foot fetish was common among men either? There is definitely a niche for everyone on the internet, but I was not aware that it was a common place interest.