Numerous clips have been shared online regarding how self-importantly Aaron Sorkin and company took themselves while they were making “The Newsroom,” a show that practically announced itself as the last stand for human rights and journalistic decency in the world. Holding that impossible standard high in its third season is Apple TV+’s expensive hit “The Morning Show,” a program that makes it feel like if morning news in America falls, then the apocalypse is just around the corner.