I'd like to pick both options for the crowner. Having the base of the trope be "All main characters know how to fight" and note that it can be taken Up to Eleven
when "almost everyone, including minor extras, knows how to fight, regardless of how much sense it makes."
To keep a bit of the flexibility.
Also, one of the things i was most reminded of by the trope concept that wasn't covered at all was the fact that this concept (everyone knows how to fight) is found very often in JRP Gs
. Village girl
? of course you know martial arts. selling flowers for a living
? why shouldn't you carry around a quarterstaff to fight monsters with? Rock star
, but also combatant!
Just the fact that everyone you meet, either comes with a weapon (often strange and exotic weapon) that they know how to use, just about as good as the proffesional soldier, or knows enough martial arts that they don't need to, or know magic. Seems to represent this trope very well. It should be mentioned in the description.