There’s a bit in one of the specials where Moffat makes it clear, though — the numbering is The Doctor, and except that one bit at the end, John Hurt’s incarnation does not think of himself as The Doctor. The Warrior is what a lot of other fans have been calling him. So the incarnations get renumbered — Capaldi is the last regeneration right now, but he’s still the Twelfth Doctor, because Hurt isn’t The Doctor.