For a long time, it was just setting the default search provider to Google in exchange for a beefy stipend. Later, paid links in your new tab page were added. Then, a proprietary service, Pocket, was bundled into the browser - not as an addon, but a hardcoded feature. In the past few days, we’ve discovered an advertisement in the form of browser extension was sideloaded into user browsers. Whoever is leading these decisions at Mozilla needs to be stopped.