It is great that now by default Firefox in Tablets is set for the desktop but it will be great to have this set as a dynamic value as if the device is portrait mode having the mobile view it is better to see multiple websites
It looks like something was improved to add search engines in Firefox Desktop 140, mow we need that for Firefox for Androidhttps://www.mozilla.org/en-US/firefox/140.0/releasenotes/