Also this is from Onlyfans, not some big studio. Jax is a known porn stud so he, most likely, has his favorites to work with on sets and invites them to make content with him online. Why wouldn't he pick someone who genuinely wants to have sex with him and not just "fake it to make it"!!!
So just because its being filmed she can't have an honest loud orgasm? In porn you actually have a space where you can truly express how good something feels without worrying about others hearing it. We know that some are definitely faked but let's not make blanket assumptions.
Wonderful .. Imagine your young wife always rejected anal to you. Now you are watching how she is brutally assfucked by your BBC neighbor, and she is screaming anything like "Daddy ... Daddy ... Harder Daddy ... "
Im sure shes having a great orgasm, and not to take anything away from him, but you could bet that if they weren't purposefully filming that, she wouldnt be so verbal......at least 50% of that is "for the camera".......