The general consensus in that thread is that, while the Vision Pro can play “flat” porn videos on sites like PornHub, there is currently not an easy way to play 180 degree side-by-side videos on the Vision Pro, which is how most commercial VR porn is filmed.
The only downside is that if you shift into VR from AR, your keyboard is occluded. Not so bad when you’re already typing but hard to find if you need to do something locally in meatspace and then need to come back. I feel like they need some training to keep the keyboard from occluding if it’s detected.