I think Whittaker could have been a great Doctor. I don't blame her for the lackluster show she was involved with, I blame Chibnal. I know he is a talented individual, but I do not think that he and his team of writers were up for the task of working on such a beloved and iconic series. What 13's entire run lacked was the joy that Doctors 9-12 had. When I say joy, I do not mean in her performance, which I liked, I mean in the stories themselves. Her finale had that and I would have really liked the rest of her tenure to have reflected that fun. If it had, I do not believe she would have been unfairly disliked by the fan community. Because, let's be honest, fans are jerks.