It appears Netflix's adaptation of the Sony's Horizon series isn't moving forward. According to Rolling Stone, the show—which was being developed by Umbrella Academy showrunner Steve Blackman—is "no longer moving forward." Blackman had been offered a $50 million development deal to adapt PlayStation's apocalyptic robot dinosaur series and to bring another science fiction show called Orbital to life.The news of the cancellation is justifiably overshadowed by a larger revelation by Rolling Stone: that Blackman faces numerous accusations by former employees of fostering a toxic workplace environment where he allegedly discriminated against employees, claimed credit for scripts he did not write, and retaliated against those who spoke up against his behavior.Bl…