Does any universe have a "just a completely dark room" channel? How many dark room channels are there?
Is there a universe with channels focusing on these subjects:
"Video of the last tears of terminal cancer patients as Jerry Lewis tells jokes about his dick"
"This guy doesn't like ice cream but he eats it to reassure his girlfriend that
he isn't vegan"
"A single hair grows on a scalp"
"Infant children read two-century-old stories about shopping for goose-grease and comment on the prosody"
"Gameshows where an entire country's left-handed population guesses how you'll die"
This is the whole point of the Rick and Morty cable bit. There are things that would not be on TV in any universe that invents TV. It's hilarious to pretend they would be.
It's clear you have a misunderstanding of infinity.
In a show, there are a certain number of frames. In one frame, there are a certain number of pixels. Each pixel can be one of some number of colors. An infinite TV would be able to show every combination of every color of pixels, follow by every combination of frames, simultaneously and forever. All those shows are in there. Not only that, but all of this is also countably infinite.
That's not a multiverse cable situation and there are way more kinds of infinity than just countable and uncountable.
In a multiverse situation you're watching actual content from an infinity of universes where beings exist who have produced and selected that content.
You're not watching an infinite amount of static and magically selecting the parts of static that are coincidentally equivalent to specific content.
All multiverse content must be watchable and creatable by the kind of creature that creates a television. So content that is unwatchable or uncreatable by any conceivable creature will not be in that infinite set.
It is very easy to describe impossible content and any impossible content will not be on the multiverse TV.
Trivial counterexamples that are describable but uncreatable, in any universe similar enough to ours that it has television:
-a channel that reruns actual filmed footage of a given universe's big-bang will not exist.
-a channel that shows *only* accurate, continuous footage of the future of that universe.
-a channel that shows the result of dividing by zero.
Channels that may or may not be uncreatable:
-a channel that induces in the viewer the sensation of smelling their mother's hair.
-a channel that causes any viewer to eat their own feet.
-a channel that cures human retinal cancer.
-a channel that shows you what you are doing, right now, in your own home in this universe, like a mirror. Note that this requires some connection between our universe and the other universe and there's no guarantee, in a multiverse situation, that connections between the universes are also a complete graph.
These examples are more important. We know they are either possible or impossible but we do not know which. Just saying "multiverses are infinite" doesn't answer the question.
Don't forget to posit an infinite curator who watches every channel on the infinite TV and responds to queries for channels with something sensible, not a random garble of pixels.
