@TriptychTwinsRidesAgain
alright I see two explanations: 1. s14 was the first season to be in disney+ so in order not to confuse people it was rebranded s1. "Furthermore, Disney does not currently own the streaming rights to seasons 1-13 of the revival, so Gatwa's new numbering may help attract audiences who may be resistant to using multiple services just to catch up with what came before." https://screenrant.com/doctor-who-season-14-ncuti-gatwa-numbering-change/ 2. it's a woke reboot "There is no doubt that season 14 represents a fresh era for the franchise, with the first Black Doctor and the exploration of more inclusive themes, so changing the numbering honors these achievements." https://screenrant.com/doctor-who-season-1-reboot-ncuti-gatwa-era-explained-russell-t-davies/