I agree that clinical studies need to happen. I don't think that average people without medical training should be allowed to conduct those studies. Most people should not be giving pelvic exams to dead bodies. Regardless of if it is "nonsexual," it is ethically dubious, certainly unprofessional, and deeply concerning.
She's the one who made this about trans people by calling their bodies mutilated and trying to "out" which plaster casts were those of a trans woman. She deliberately threatens to harm the trans community by saying she'll make a video about how to "spot a trans" through features of their vulva, despite the fact that, as many have pointed out, it is often not possible to tell because cis women's vulvas have so much variation. Most of the vulvas she accused of being "nonfemale" were cis women's vulvas.
She may be just "one person," but she's part of a larger systemic issue. She just happened to say "the quiet part" out loud, and very publicly. Pin's GC views are particularly harmful because her platform is all about body positivity, and then she goes and uses that platform to bully both trans and cis women for the appearance of their genitals. Transphobia harms all women.