Very nice. I didn't have some of those. Thanks for posting!

For those of us who have a user.js file to keep all these about:config customizations over time and across installs... here they are formatted for user.js:

  user_pref("privacy.query_stripping.strip_on_share.enabled", false);
  user_pref("browser.translations.select.enable", false);
  user_pref("screenshots.browser.component.enabled", false);
  user_pref("dom.text-recognition.enabled", false);
  user_pref("browser.search.visualSearch.featureGate", false);
  user_pref("browser.ml.linkPreview.enabled", false);
  user_pref("browser.ml.chat.menu", false);
  user_pref("dom.text_fragments.enabled", false);

Also, there's a nice little toolkit for removing items from all the Firefox right-click menus: https://github.com/stonecrusher/simpleMenuWizard.