Complex sentence: Critics of these stories have called it depressing, gloomy, even nihilistic, as it appeared to be the result of an editorial decision to annihilate the Morlocks for no real reason, other than to provide audiences with bloody, violent entertainment.
Split into simpler sentences: Critics of these stories have called it depressing, gloomy, even nihilistic. They believced that the Morlocks were annihilated for no real reason other than to provide audiences with bloody, violent entertainment.