You could install TamperMonkey then add the following script. It will inject custom style sheet code that hides the tags.
// ==UserScript==
// @name Hide Discourse Tags
// @namespace http://insomniacsoftware.com/
// @version 0.1
// @description Simply hides the Discourse Tags
// @author Onan of Insomniac Software
// @include https://forum.keyboardmaestro.com/*
// ==/UserScript==
(function() {
var css = [
".list-tags, .discourse-tags",
"{ display: none !important; }"
].join("\n");
var node = document.createElement("style");
node.type = "text/css";
node.appendChild(document.createTextNode(css));
var divs = document.getElementsByClassName("list-tags");
if (divs.length > 0) {
divs[0].appendChild(node);
} else {
document.documentElement.appendChild(node);
}
})();