The world itself isn't terrible, and it was nice to have former party mates that weren't set up to be basic cartoon villains for once, but it's a little odd that it took him spending however long going through all the different levels, skills, etc., and he couldn't figure out how to use his skill effectively. He got up to level 78, and has apparently gone through a bunch of different parties at this point, but still couldn't figure out how to make use of his skill, even though he's quite determined to stay in this line of work. It would've been one thing if he was a total newcomer and it could've been explained away with being inexperienced and unfamiliar with his own abilities, but he's got a lot of experience under his belt, and has had ample opportunity to grow and develop alternative strategies to make the most of his skillset, especially if he's knowledgeable enough to be a leader and teacher figure to new adventurers.
Without needing to carry around arrows, he's a lot lighter on his feet than standard archers, so he could've been a good kiting tank that drew aggro and distracted monsters while the rest of the party attacked, ran around/behind the monster to take shots on it while the party kept it occupied in the front, or whatever else really.
Maybe the message is different from the standard "don't underestimate the little guy" or "hard work pays off" themes that a lot of these types of stories have, and maybe it's more about "a little push can be all you need to find your own worth", and that's a valuable moral, so I could totally get behind that, especially when a lot of people feel lost and like they're just coasting along, but giving him an auto-aim that takes the realm of skill out of the equation just makes it feel like he's on easy mode instead of finding a way to make up for the flaws of his unique skill.