PECS, are you being deliberately obtuse?
"quizqueen I cannot comment on specifics as I do not watch Dr Who but your post makes you sound as if you prefer we were in 1950s racist / sexist era! "
What complete tosh - and offensive too. A clever political agenda going on there - IE: like it, approve of it, lap it up or be seen to be racist and sexist.
People are objecting to a disproportionate (extremely disproportionate) view of the world given through the BBCs left-wing, politically correct lens.
An alien looking in would think that most UK families are dark skinned or mixed race and that every one of them had a gay or disabled family member.
The BBCs diversity agenda is infiltrating everything. People want sensible representation, not saturation. That makes no one sexist, homophobic, racist etc, etc, etc.
Trust a left winger like you to suggest it!