fix-xda-sponsored-posts.user.js

// ==UserScript==
// @name         Fix XDA Sponsored Posts
// @namespace    https://gist.github.com/notyal/15af5f6bf883267cc407f5aa2adeeedd
// @version      1.0
// @description  Make it easier to skim through the actual XDA blog posts.
// @author       Layton Nelson
// @match        https://www.xda-developers.com/*
// @grant        none
// @downloadUrl  https://gist.github.com/notyal/15af5f6bf883267cc407f5aa2adeeedd/raw/fix-xda-sponsored-posts.user.js
// @updateURL    https://gist.github.com/notyal/15af5f6bf883267cc407f5aa2adeeedd/raw/fix-xda-sponsored-posts.user.js
// ==/UserScript==

(function() {
	'use strict';

	for (let metadata of document.body.querySelectorAll("a.article-meta-data")) {
	if (metadata.href.endsWith('a-word-from-our-sponsors/')) {
		let post = metadata.parentNode.parentNode.parentNode.parentNode;
		// dim the post
		post.style.opacity = '0.2';

		// remove the post
		// post.style.display = 'none';
	}
}
})();

This doesn't remove posts from the XDA Commerce team, which seem to be the current equivalent of the sponsored stuff.
swapping the href a-word-from-our-sponsors to
if (metadata.title.endsWith('Posts by XDA Commerce Team'))
works, however.