I stumbled upon the press notes of Kristin Johnson's film Cameraperson (2016) and found

AN INCOMPLETE LIST OF WHAT THE CAMERAPERSON ENABLES

For the cameraperson:

• Access and a reason to stay in worlds not of one’s own
• Complete distraction from one’s own life
• Sense of invisibility
• Sense of invincibility

For the people filmed:

• A chance to speak of things they have never spoken of and hence say things they never expected to say
• The chance to see him or herself as a subject (worthy of time and attention)
• The creation of an image of self, the distribution of which one cannot control on a global scale in perpetuity

This is an an abridged quote as heard in the Mike Mills film C’mon C’mon (2021).

What struck me is how this looks like the quality of a good conversation - for the hearer a temporary disolution of self and for the heard a validation of it.