If I stop doing porn, what happens to the videos?
You can stop working tomorrow. That does not mean yesterday's film disappears with you.
I think this distinction is one of the most important things to understand before doing any public adult work because it takes a lot of unnecessary drama out of the question. Doing one porn film does not mean you have chosen a lifelong porn career. One project can genuinely be one project. The part that may continue is the material you already agreed to make.
Before filming, I would want to know where that material can be published, how long the producer can use it, whether it can be licensed to other outlets, whether still photographs can be taken from the video, and whether short clips can be used for promotion. Different deals answer those questions differently. The important thing is that the performer knows the answer for her deal.
Then there is the internet itself. People save things. They screen-record, repost and archive. That happens to porn, OnlyFans, cam streams and ordinary social-media content. Takedowns can sometimes remove unauthorised copies from particular places, but I would never make the original decision around a promise that every copy can always be found and erased later.
A stage name still matters. It can make the connection between everyday identity and adult work much harder to discover casually. Somebody searching your legal name may never find the stage identity. That is useful. It simply does not stop recognition if somebody who already knows you sees the material.
This is also why I think one-off production work can suit people who are curious but do not want to build a permanent creator business. You can agree one job, get paid for it and then decide whether you ever want another. There is no subscription account sitting there demanding new material every week, no audience you need to keep warm, no obligation to turn one experiment into a career.
The sensible test is not "Will I still be doing this in five years?" You can control that. The harder question is "If the thing I make now still exists in five years, am I okay with that?"
For my productions, publication, usage, face visibility and public identity are part of the discussion before booking. I would rather somebody decide no with the real terms in front of her than say yes to a fantasy version where everything disappears the moment she changes her mind about the career.