Evidently, creator Charlie Brooker's turned his existential anxiety inwards for this latest batch of episodes (immediately solidifying the installment as one of the most creatively audacious seasons since its inception) & so rather than expressing worry about the exterior world around him, he's inventively found a way to evolve "Black Mirror" in to something far more introspective so it's able to perfectly communicate his justifiable concerns regarding the cynicism of the content he's expected to continually make for prospective audiences in the film / TV industries.
It's a valid point, well made (in his defence) - considering the constant production of macabre material does likely contribute to societies' gradual desensitisation to inconsolable misery (something we should understandably never become accustomed to, for good reason, nor witness as frequently as we do, on screen) & therefore, I appreciate the self-aware, emotional maturity shown - in acknowledging the inadvertent detrimental consequences to feeding a particular (arguably unethical) demand, for the sole purpose of commodification & profit in a dystopian system that wrongly rewards those acts of inconsiderate selfishness.
Plus, rather than attempting to wondrously predict the future (admittedly, a reliable foresight which has transformed in to a bit of a gimmick, these days), it's also refreshing to see the executive producer gift us with something new, reflectively looking back at his own legacy with hindsight instead - to question if the price paid for success has truly been worth it.
We don't normally get that hesitation in response to mean-spiritedness... Though as this asks; maybe we should?
Hence, with "Loch Henry", he & director Sam Miller dig deep, using one genre we heavily tend to associate with controversy as a basis on which to form their argument (acting as a general example of the well-intentioned, indulging in immorality), delivering a scathing commentary, analysing the theoretically senseless damage done to every-day people by the commercialisation of exploitative true crime documentaries - in easily one of the darkest, most disturbing features ever included in the show.