There is no such thing as "external experience", this is just called reality.
Experience = reality + human filter (mood, prejudice, ...)
Experience is a human concept, therefore it is necessarily subjective. Humans are not machines. Thus "lived experience" is just an empty phrase, invented to give a virtuous appearance to prejudice.
I see what you are saying but the connotative meaning of experience is not that. At least not in the media I consume. Usually experience means "I have been in that situation" but it does not take into account how the person arrived there. It's like trying to do a simulation without knowing any starting condition
It's a totally normal thing in english to add redundancy to emphasize. Global pandemic isn't wrong and nobody has to pay more to use two words instead of one. Lived experience is the same thing. Nothing wrong with emphasis.
Experience = reality + human filter (mood, prejudice, ...)
Experience is a human concept, therefore it is necessarily subjective. Humans are not machines. Thus "lived experience" is just an empty phrase, invented to give a virtuous appearance to prejudice.