Just like the term 'survivor' the term 'experiencer' shifts from passivity to activity, but without value judgement. After all, every experience is only determined (in value) by the added adjective (beautiful experience, gruesome experience, boring experience) and even leaves room for ambivalence (a gruesome but banal experience).
"Experiencer" is a dreadful neologism.
I sort of get the idea here but did not want to be either passive victims or heroic survivors and all that these terms implied? They wanted something else - a more neutral statement but the problem I have is rape is a crime.
All crime requires a perpetrator to commit it and most require a person on whom that crime is perpetrated. Even crimes against property- e.g vandalism will impact indirectly on a person.
Calling someone the "victim of a burglary" is a neutral term. It does not imply heroism or passivity. It merely acknowledges what happened to that person.
Also "experiencer" to my ears anyway implies an element of choice.
"Experiences" are frequently marketed as fantastic/wonderful/ thrilling (I went on a tour of the Far East run by a company with "Experience" in its name)
Or "experience" is a postive thing in a career sense (my work profile says I have over 25 years experience in my chosen field)
I am not convinced "experience" is neutral.