RPS asked about it, and according to them it seemed to be a reason for it:
"Matthew did actually ask about it (Swen said he was the only person to ask). If memory serves Swen said something about it being almost like the character is telling a story to someone, but don’t nail me to the wall because I don’t have the interview audio right now."
"Yeah, Swen seemed to suggest it might have a mysterious relevance – he ducked the question and smiled enigmatically. I wondered if it might be the mind tadpole inside your head trying to ‘write your story’ or something."
source: comments section on
https://www.rockpapershotgun.com/2020/02/27/baldurs-gate-3-is-nearly-here/#comments
