Foot fetishes are probably among the most vanilla/commonplace fetishes in the sw industry and just in general. I've known quite a few guys irl who get turned on by feet. I don't really think it's right to kink shame and assume someone has issues, as long as everyone involved is consenting adults. What you may think is strange, others might find totally normal. There's quite a few things that don't turn me on, but I get how it could turn other people on. I have a thing for choking/breath play, and that is certainly not everyone's cup of tea. However, I do have a few things that are totally off limits for me (scat/vomit play), but that's my personal preferences and I wouldn't judge anyone for being into that or catering to it.