@aral I like the sentiment, but “user” is often more accurate in context.
In tech, it's indeed used to distinguish from designers / programmers / engineers, but that's because we need a language for people that are going to “use” the interfaces that we are working on. “User experience” (UX) is precise, whereas “person experience” is not.
I'd add that a user isn't necessarily a person. On social media it could be a bot, or a company.
On "othering / colonial framing", yikes, I have no words.