I get what you're saying completely. However, there are scenes in some pornography that depict rape that is horrific, on the tube sites. There's no consent, it's traumatizing, and it can be stomach churning. Those are the scenes that people are searching for on the tube sites that need to be removed.
Now, if those are done with consent (say, consensual non consent, BDSM scenes, etc) then that's fine, as long as it's noted as such. That's the kind of content that makes it different than the "free online porn" that is out there not denoting any kind of consent, that people are freely watching and a lot of teens are using as their education.
Companies like Erika Lust's production companies work hard to include consent reels with their films so people know those in the films have sat down ahead of filming to discuss what they are and aren't okay with, even if the conversation doesn't happen in the film.