This is trash, competently executed.
The art is good enough, the baffled bystanders diverse enough, the plot points just novel enough, to elevate it to mediocrity.
I give it 6/10.
The MC is OP to the point of cringe. Yeah, you just spent artifacts worth a billion gold in order to grow crops worth a few thousand, while asking for no payment. Of course they'll love you. It's just not a very sustainable business model, you know?
But the MC is clearly going to have all the god-tier artifacts he needs.
If he had a finite number of them that had to be rationed out, it would risk making the story interesting, so he doesn't.
If he were smart enough to consider the consequences of his actions, it would risk making the story interesting, so he isn't.
If he had traumas and hangups from his previous life to process, it would risk making the story interesting, so he doesn't.
This is a frustrating manga to read. The author could have aimed for something better, but he didn't even try. He just decided to play the "OP hero" stuff for cheap laughs, like everybody else.