not really
non sequitur is Latin ( an old old language dead as dead can be)
for "it doesnt follow"
https://www. blah de blah-racial-gender-discrimination.html is the basic tenet - let us call it line 1
"How can that be when she herself is a senior police officer and also a woman?" is a non sequitur - that means that it doesnt follow from line 1 . we could call that line 2 - can you count andie?
"Not to mention that the head of Scotland Yard Cressida Dick is also female." is a non sequitur from line 1. That means it does not follow from line 1. Also it doesnt follow from the sentence beginning 'how can she be...' that means it is another non sequitur from line 2
Under this analysis it is a row of non sequiturs
this means I can state I can understand it ( because it is a row of non sequiturs ) . If I hadnt understood it, then I wouldnt know they were non sequiturs. I would be left only with the usual AB cry of:
wot dat mean den?
just like you andie
have a good evening