What causes this?

I feel ya

Girls in interracial porn acting more wild making it more interesting to watch.

Guys having porn addictions slowly becoming more perverted and wanting a more interactive experience.

Girls get all the attention while some faceless guy fucks them out of frame,

The girls pleasure is highlighted and guys want to replicate this.
This slowly turns into a crossdressing fetish while buying into the whole sissy thing as it can be both hardcore porn, perverted and interactive.

Any thoughts?