Is "show, don't tell" good writing advice?

It’s an amazing writing tip.

The whole idea is to decide what you are aiming to express. So if you want to express someone’s happiness, you want to write everything that will demonstrate how happy that person is, without using the word happiness. You describe them jumping up and down, and the yelling as they stare at their lottery ticket, or whatever is making them happy. Make it a physical, emotional experience.

But you have to be careful and decide what is important. Otherwise, the writing will drag on and you will show don’t tell what time it is and what people’s names are and the story will take way too long. It’s OK to tell sometimes too.

I don’t like the phrase “show don’t tell” because it makes telling seem bad in every case. The reason the tip matters is because people usually spend their whole article telling rather than showing. Telling can become like an information dump and read like a dictionary.