There is no built-in way to hide that item. It sounds like you have heard about the community-developed community to use custom style rules to hide it. Perhaps we can simplify the explanation about how to do that if you're interested in trying it. ''<p>phantomdotexe [[#question-1331057|said]]</p>'' <blockquote>There are also some links to extensions that have been since removed. </blockquote> Do you mean that pages on the web linked to extensions on the Mozilla Add-ons site that are no longer available? If the articles were from 2017 or earlier, it's possible they were legacy extension that are not compatible with Firefox 57+. Those were removed some time ago.