When you land on a user page, instantly go to the user's Gallery/All page.
// ==UserScript==
// @name Deviantart.com: always redirect to Gallery ALL
// @description When you land on a user page, instantly go to the user's Gallery/All page.
// @author Konf, dhaden
// @namespace https://greasyfork.org/users/424058
// @icon https://www.google.com/s2/favicons?domain=deviantart.com&sz=32
// @version 1.0.1
// @include /^https?:\/\/www\.deviantart\.com\/[a-zA-Z0-9\-\_]+(?:\/gallery)?$/
// @run-at document-start
// @grant none
// @noframes
// ==/UserScript==
(function() {
const userName = location.pathname.split('/')[1];
window.location.href = location.origin + '/' + userName + '/gallery/all';
})();