I feel there's an opening for mobile experience on Android. Chrome is pretty terrible in that space. No extensions, no reader mode, no eacape from AMP, etc.
It also has a mode which automatically redirects to non-AMP version of site automatically.
Also the browser itself tends to be a version or two behind which isn't particularly comforting either.
Also it wasn't exactly done as a joke, the number used to overflow onto a second line and not be readable.
In particular, at least a couple of times a week Firefox will stop loading pages on all tabs, like if the connection was abismally slow. Killing and restarting the app fixes the problem.
It had actually been taken out of scope when I unwittingly started working on it. I had enough success within the first week or so that I managed to convince my manager that we should bring it into scope again for the initial release of the Chromium-based browser.
which is even funnier
Firefox has its problems; most times after opening it for the first time, I have time to input some search terms and _then_ Firefox ends loading up, and suddenly my search blanks out and stops loading. That happens a lot.