Sadly his own unconscious sexism means that he couldn't believe a woman would be a sports presenter before now, whilst his own unconscious superiority complex makes him think he can't be wrong so he never bothers to do a 3 second google search to find out just how wrong he is, just as his own unconscious racism prevents him seeing that skin colour actually does have an effect on her getting a job at the BBC, because they haven't short-listed any of the multitude of fantastic White female athletes with TV experience who are just as qualified, which then links back to his unconscious superiority complex making him unable to see that he might be wrong.
It always seem to be the most "progressive" minds that seem, in reality, to be the worst purveyors of "-ism's" because at least people that are out in the open with their "-ism's" are easily identifiable, rather than these insidious people who keep it hidden under a veil of righteousness