I registered that people online are kinda shocked by this episode. And I don't blame them, on the first glance it looks silly and so much different from the rest of the tv show. It doesn't contain sci-fi elements, no futuristic technology, no familiar twists. But it doesn't matter from which genre BM draws - its resources were always old B-rated F&SF shows and films and there is no real reason why it can't be even horror for once. From the beginning of the show (even the pilot wasn't sci-fi) it centred around our media reality and human communication albeit with very dark vision - of things to come but also about how things already are. Mazey Day is very true towards this basic premise of BM and tells another story critical towards media. Twelve years after the first episode aired the world has changed, technology has changed and it doesn't make sense to be technophobic and accelerationistic anymore. Mazey Day nevertheless talks about technology albeit it's "just" photography and press - but whole tv show is changing direction from technodystopia towards more abstract, core premise of itself. There is good chance that show will not exhaust itself because of it and when audience gets used to it it can find new visions. Especially visions for the future, because in those 12 years world has changed and I think Charles Brooker wants to find vision of future where we are not totally screwed and we have at least some agenda and control of our fate. If we are able to confront - let's say - those werewolves inside of us.