Chris Chibnall Era
The Chris Chibnall Era was a rolling disaster of mediocre stories and generic plotting.
DOCTOR WHO IS ABOUT TO FUCKING DIE AND IF CHIBNALL FUCKS UP WE CANCELLED IN 2019
By putting more favor on "simplifying doctor who" than writing good stories Chris Chibnall strung chains of generic stories from one end of his tenure to the other. He promised to "bring back high ratings" to Doctor Who but the complete opposite happened. They went down, the lowest they've ever been in 55 years.
By Episode 8 the show was averaging just a little under 200,000 viewers and by Episode 12 only 5000 people were watching. Chibnall was promptly fired. Peter Capaldi said "Glad I left with Moffat" and asserted that he would no longer be watching the show.
The BBC said they were "sorry" and they promised Series 12 would be good and that a "suitable writer" would take the reigns. No one was willing to take over after the failure of Series 11 and it was later announced the show had been cancelled.