Thanks, but ... This requires (a) an exit method that is not like most apps and (b) confirmation step that I want to close tabs.
Normal app closing behavior in Android 5+ is to just swipe it away.
I keep hoping there's an option to "not restore tabs" or something like that hidden away in there somewhere... like Dolphin has, for example.
I'd prefer to use Opera on desktop and phone but so far can't get past the phone annoyances.