#he never lost it
No, but seriously - this, right here, is Eight. This is how Eight has always been written in the Big Finish audios. When he’s in danger of dying, he gets snarky. There’s even a line about it in “The Resurrection Of Mars” - “he uses it to suppress his fear”. For years and years, this has been a defining feature of this Doctor, and now he’s doing it on our screens.
It’s completely beautiful.