Peter Capaldis the 12th Doctor, who was seen in the 50th Anniversary but introduced fully in S8, was the Doctor from 2014 to 2017 under showrunner Steven Moffat. Running from S8-S10, his era was mostly disliked by fans and casual viewers alike. For Capaldi, Jenna Colemans Clara oswald, the sonic glasses and how different his Doctor was to the 10th and 11th Doctor. They just wanted Matt Smith back.

But in 2018 after Capaldi's 12th Doctor had regenerated we were introduced to the 13th Doctor, Jodie Whittaker and brand new showrunner Chris Chibnall. & this Doctor and era? It was hated by fans and everyone largely. Fans flocked to rewatch the show and finally gave Peter Capldis era of the show a chance and they loved it. No longer were they hung up on the 11th Doctor Matt Smith, they just wanted good Doctor Who. And people found it in the 12th Doctor!