That means that a goblin with a dagger is a real threat, especially if he has friends, because you might be able to hit his buddies with a 4 on the die, but he could definitely work together with his friends to get a crit on you. And if he has a dagger with runes on it, or poison, or something like that, your day just got really bad.
That sounds interesting, that weak monsters can work together to be mechanically threatening. I've heard about PF2e having more teamwork, but I'm not familiar enough with the system to comment on it. I have noticed that D&D tends to be very much "everyone does their thing on their turn, and then spaces out until they get attacked or are up again".
I like how Fate lets anyone "create an advantage", so your party face that can't throw a punch can use their "Bravado" skill (or whatever) to distract the enemy, so someone can use that to land a big hit. I imagine PF2e has stuff like that