Kuruto is a self-sacrificing airhead. If he was made fully aware of how much his power could help people, the target on his back would glow brighter than the sun or he would work himself to death.
Yeah, maybe I didn't explain myself properly: the target thing was already said some chapters ago by Yurisha, but iirc it was also said that the atelier meister was a figure so important that was almost untouchable....but that's not the point.
My problem is Kuruto's airheadness: the boy comes from a village of people so talented they basically are superior beings. I mean, they use mythril to make cutlery...and while this shows that the entire village sense of normal is completely not normal, they had some interactions with "normal people" (as shown in flashbacks). That's why I find it stupidly impossible that they sent a young boy to the city and nobody said to him "hey, keep it down just a bit" or without any way/knowledge of defending himself from potential danger (or from himself).
Let's look at the events: he built a mansion/atelier from the ground up in a couple of days, he dug mythril and iirc adamatium from a random mountain/mine, he made Lyse's dagger that is basically a mithic weapon, he made the fortress wall able to exorcise spirits/skeletons, in the ruins he dug a tunnel directly to the final room and cleared the demon's magic circle with a mop, he dug a hot spring in the middle of the town and built a foot bath.....
Like, c'mon, it's stupid that the other characters can only be shocked and slowly accept it instead of making him realize that normal people can't do that. The boy is literally living in a fake world where he thinks everyone can do the things he does.
It's just my opinion, but Kuruto is the result of "author: I need a klutz mc with abnormal abilities that make abnormal things so that he is the comic relief"