Firefox is the only browser on Android which still doesn't have tabs. Wrangling multiple tabs on a tablet or foldable is just a pain on Firefox. Chrome on standard screen sizes even has tab groups. Until then, Firefox is a no go for me.
I'm speaking of an exposed tabs bar. Like all modern browsers have... except Firefox for Android. https://connect.mozilla.org/t5/ideas/tablet-amp-mobile-ui-tab-bar-for-android/idi-p/333