NO BECAUSE IT MAKES SO MUCH SENSE FROM A NARRATIVE PERSPECTIVE LISTEN.
In 2005 RTD takes over Doctor Who after 16 years off the air. But rather than bringing back the character with the same characterization, RTD gives the Doctor PTSD a la the Time War. This fundamentally changes how the character is written. The Doctor is not the same. Even after Moffat undoes the Time War he continues writing the Doctor in a similar manner.
Fast forward to 2022 when RTD takes over the show again. The Doctor has been running. The character continually ignores their feelings and never talks about their past or the people they traveled with. Companions have been asking the same questions about the Doctor’s behavior. For 17 years.
Rather than continue on with that same characterization, RTD decides to shift the character in a monumental way.
15 has had time to heal. The bi-regeneration is confusing but 15 says he is the way he is because 14 stopped and healed.
15 isn’t just a new incarnation, he’s a new expression of the Doctor. And the best part is, RTD already said that in so many words! He called Ncuti the new new Doctor. THIS IS WHAT HE MEANT.