Radio and TV/movies are different things. Radio can only describe audibly and cause the listener to form visual images. What you are referring to as “showing” I believe. Just like writing can and only describe with words causing the listener to form visual images. Also what you are calling “showing” I believe. I am not opposed to enhanced description or “showing”, but it can be overdone in my opinon.

For example: “He was a pirate who had lived a long, hard life and it showed on his face.” is descriptive but it leaves a lot to the imagination. The reader can picture the pirate in their mind however they choose.

As opposed to “The creases in the pirate’s face were illuminated and exagerated by the moonlight, which shone off his bald head. While the bushy eyebrows that framed his tired green eyes revealed him to be a man in his late fifties. His tattered blue jacket fit snuggly around his large belly. A belly that seemed larger due to his short stature. His loose-fitting brown trousers were tucked in to his black boots, which were well-worn from too many years use. Etc…”

The second version leaves little room for imagination. It “shows” the reader the pirate. But it forces the writer’s vision of the pirate on the reader. Is that good or bad? I guess that is a matter of opinion. I think either is fine. I just prefer to use my imagination a little more than having everything spelled out in great detail.

When writing, I prefer to leave more to the imagination than some writers. And I think some writers go the opposite and give far too much unnecessary detail. They are a little too “showy” for my tastes.

That is my opinion. I’m not a successful professional writer, so take it for what it’s worth.