Firefox still show that page, you just have to open the feed directly in the browser (instead of pressing that orange icon). You can put the icon back in the t

Firefox still show that page, you just have to open the feed directly in the browser (instead of pressing that orange icon). You can put the icon back in the toolbar, or you can press on the globe/keylock near the url, press on more informations, and then Firefox will show all the available feeds for the page under the "feeds" tab.