This script insert a button which allow you to unfollow all curators that are currently shown

Steam unfollow all shown curators.user.js

// ==UserScript==
// @name            Steam unfollow all shown curators
// @name:de         Steam entfolge allen geladenen Kuratoren
// @namespace       kurotaku.de
// @version         1.0.2
// @description     This script insert a button which allow you to unfollow all curators that are currently shown
// @description:de  Dieses Skript fügt einen Button hinzu, mit der Sie alle Kuratoren, die derzeit angezeigt werden, entfolgen können
// @author          Kurotaku
// @license         MIT
// @match           https://store.steampowered.com/curators/mycurators/
// @icon            https://steamcommunity.com/favicon.ico
// @updateURL       https://gist.github.com/Kurotaku-sama/017f6c568597eeace3a41b42174f0443/raw/Steam%2520unfollow%2520all%2520shown%2520curators.user.js
// @downloadURL     https://gist.github.com/Kurotaku-sama/017f6c568597eeace3a41b42174f0443/raw/Steam%2520unfollow%2520all%2520shown%2520curators.user.js
// @grant           none
// ==/UserScript==

(function() {
    let nav = document.querySelector(".navigation_bar");
    let button = "<a id='k-unfollow-curators' class='btn_green_steamui btn_medium' href='#'><span>Unfollow all loaded curators</span></a>";

    if(nav) {
        nav.insertAdjacentHTML("afterend", button);
        document.getElementById("k-unfollow-curators").addEventListener ("click", unfollow_curators , false);
    }
})();


function unfollow_curators() {
    let elements = document.querySelectorAll(".following_button");
    for(let i = 0; i < elements.length; i++) {
        elements[i].click() ;
    }
}