Everyone has their own red lines, which if a story strays beyond, they're not willing to continue the suspension of disbelief.
In this case...
The stories are set in the universe of Doctor Who, not our universe, which the Doctor Who universe, from time to time, might superficially resemble. It might look like London, Earth, in the early 21st century but it doesn't stop stories with plastic coming alive and spaceships crashing into Big Ben from being credible in their own terms, within that fictional universe. In Victorian times there were apparently dinosaurs and reptilian people, and Cybermen and giant robots stomping around in London too.
It doesn't invalidate the story when we know those events didn't happen in our history.
To cite a non DW example or two: In the prime Star Trek universe, Earth was wracked by war with and between genetically engineered supermen. In the 1990s. That didn't happen in the real world, so does that invalidate the story?
There are also many stories with fictional Prime Ministers or US Presidents. Does that invalidate the story?
That's not to say that DW doesn't have other credibility issues from time to time.
In this case...
The stories are set in the universe of Doctor Who, not our universe, which the Doctor Who universe, from time to time, might superficially resemble. It might look like London, Earth, in the early 21st century but it doesn't stop stories with plastic coming alive and spaceships crashing into Big Ben from being credible in their own terms, within that fictional universe. In Victorian times there were apparently dinosaurs and reptilian people, and Cybermen and giant robots stomping around in London too.
It doesn't invalidate the story when we know those events didn't happen in our history.
To cite a non DW example or two: In the prime Star Trek universe, Earth was wracked by war with and between genetically engineered supermen. In the 1990s. That didn't happen in the real world, so does that invalidate the story?
There are also many stories with fictional Prime Ministers or US Presidents. Does that invalidate the story?
That's not to say that DW doesn't have other credibility issues from time to time.



