TV writers need to learn how to take a punch, a mandatory eight count and then get up and go back at it. They also have to know how to throw a punch.
Don't blame writers for a dearth of originality. They're busy writing, developing, and pitching the most creative, engaging stories they can... but they don't get to decide whether those stories get made.
Don't break stories to reflect your theme. If you're lucky, and if you've written solid stories, a theme will start to emerge.