the most efficient script to bring back youtube full description

this is a scrip restore the ability to show youtube full description if. because youtube try to force us to use the new layout by breaking the old layout. there are two other scripts that do the same thing but this scrip is the most efficient. because other scrips use 2 or 3 variables but this script use only one variable and it is the shortest one

θα χρειαστεί να εγκαταστήσετε μια επέκταση όπως το Tampermonkey, το Greasemonkey ή το Violentmonkey για να εγκαταστήσετε αυτόν τον κώδικα.

You will need to install an extension such as Tampermonkey to install this script.

θα χρειαστεί να εγκαταστήσετε μια επέκταση όπως το Tampermonkey ή το Violentmonkey για να εγκαταστήσετε αυτόν τον κώδικα.

θα χρειαστεί να εγκαταστήσετε μια επέκταση όπως το Tampermonkey ή το Userscripts για να εγκαταστήσετε αυτόν τον κώδικα.

You will need to install an extension such as Tampermonkey to install this script.

Θα χρειαστεί να εγκαταστήσετε μια επέκταση διαχείρισης κώδικα χρήστη για να εγκαταστήσετε αυτόν τον κώδικα.

(Έχω ήδη έναν διαχειριστή κώδικα χρήστη, επιτρέψτε μου να τον εγκαταστήσω!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(Έχω ήδη έναν διαχειριστή στυλ χρήστη, επιτρέψτε μου να τον εγκαταστήσω!)

// ==UserScript==
// @name        the most efficient script to bring back youtube full description
// @version     1
// @match        *://www.youtube.com/*
// @grant       GM_addStyle
 
// @namespace https://greasyfork.org/users/587153
// @description this is a scrip restore the ability to show youtube full description if. because youtube try to force us to use the new layout by breaking the old layout. there are two other scripts that do the same thing but this scrip is the most efficient. because other scrips use 2 or 3 variables but this script use only one variable and it is the shortest one
// ==/UserScript==
if (document.querySelector('button[data-gen204="feature=watch-show-more-metadata"]') == null) {
function GM_addStyle(text)
{
  var newHTML = document.createElement("div");
  newHTML.innerHTML = text;
  document.getElementById("action-panel-details").appendChild(newHTML);
}
GM_addStyle("<button class=\"yt-uix-button yt-uix-button-size-default yt-uix-button-expander yt-uix-expander-head yt-uix-expander-collapsed-body yt-uix-gen204\" type=\"button\" onclick=\";return false;\" data-gen204=\"feature=watch-show-more-metadata\"><span class=\"yt-uix-button-content\">Show more</span></button>")
GM_addStyle("<button class=\"yt-uix-button yt-uix-button-size-default yt-uix-button-expander yt-uix-expander-head yt-uix-expander-body\" type=\"button\" onclick=\";return false;\"><span class=\"yt-uix-button-content\">Show less</span></button>")
} else {}