

I agree with the principle of what you’re saying, but a 100% soylent diet is actually perfectly fine, and genuinely much healthier than what almost anybody eats otherwise. It’s really good stuff. (assuming you are talking about the real-life name-brand stuff, not the literary version)
It was mentioned elsewhere, but ErsatzTV does exactly that. You can set up channels, build playouts, set schedules, and even do things like adding pre-rolls, fillers, commercials, and watermarks. Really neat project.