I don't think I disagree with the point you're making on misogyny, but I'm having a hard time following the argument. To my understanding, the original claim about "bodies existing for sexual gratification" frequently applies to men in male-male content as well (including as being viewed by women, to complete the mirror image). So the thing that makes it misogyny, as opposed to general misanthropy or class exploitation, is that female-female content is included under the "straight" label while male-male isn't?
Taking those stats on video viewership though would seem to support a claim that a site is assuming a male viewer, and using the "straight" label as applied to the (male) viewer would select any content containing their desired sex (women), both male-female and female-female. That assumption of male viewer and self-applied label would also support seeing male-male but not female-female under the "gay" label (though with male-female missing, perhaps explained with something about self-insert or observer vs recipient, but maybe that goes toward your point). Having a misleading UI and making not-unprobable assumptions about viewers feels less problematic though?
I'm trying not to take a position that would vilify pornography or those involved by default, but maybe I'm holding onto that too strongly or letting too much of my own bias in. Am I missing the point entirely or just seeing it the wrong way?