This is what confuses me the most: the pronouns usually listed by people who insist on listing them are third person pronouns. How do you use a third person pronoun when talking to somebody to reference the very same person? Or are "he/him/his" etc actually second person pronouns? I.e. if somebody listed pronouns as "they/them/their" should I say "Hi, how are they doing? Can I offer them something to drink?". I hope this is not the case and these are really third person pronouns but then I fail to see how you can use them when addressing that person in a one-on-one interview (since it's "the interviewer" it was a one-on-one, right?).

PS. In Russian there are two second person pronouns and sometimes people will ask if it's appropriate to use a less-formal singular "you" instead of default plural "you" but this makes no sense in English. There is just one second person pronoun.