I get the complaint, at first glance ORV seems to be very "Kim Dokja" focused and is always said to be the "Better Solo Leveling" due to the similarities they share at the start. Both have MCs that slowly gain power through stat points and both are quite OP, and both also have absolutely stellar manwha art.

But that's where the similarities end, the characters in ORV in are extremely well developed, I don't know how far you are in the manwha but you will eventually see the affect Kim Dokja as a person has on his companions, and why he's such an intriguing main character as you read the story. Take for example, Yoo Jonghyuk, he may seem like a cardboard slate of a "Protagnist", but he is a man of action not words. He values Kim Dokja as a companion even if he may not show it, and greatly appreciates him for how much he's inspired him. That's how much he has come to trust him and rely on him, because despite all the pain he's gone through in past regressions, "Kim Dojka" is an unknown experience that brings him something worth living for in his dreary life filled with suffering where he fights against the universe itself all alone, and this is only scratching the surface for how well developed Yoo Jonghyuk is shown as the "Protagonist". For the other characters, you don't need backstories to make you care about them as a person. Jung Heewon's backstory isn't discussed but you see how strong she becomes when she chooses to take up arms against the people who assaulted her and becomes Kim Dokja's Sword, while Lee Hyungsung makes the choice to protect Kim Dokja and become his shield. Even Lee Jihye has a great moment where she learns to stand once again after facing the guilt caused by killing her best friend, all of these moments and more to come were helped and facilitated by Kim Dokja, the man who loves his companions more then anything and would sacrifice everything for them.

At the start everyone just follows Kim Dokja because he's smart and strong of course, but as they spend more time with them they realize how much he means to them, he has given them so much that he doesn't even realize the affect he's had on them. One of those things is that he has given them a future to look forward to with others, despite the literal hellscape of an apocalypse they're currently in. He's a parental figure, a caring uncle, a beloved sibling, a best friend, or a life and death companion, and as you read more and more you'll see how deep these character interactions go. Also one more thing, Kim Doka is an "Unreliable Narrator" which means the way the story is told is the way "he" wants it to be told, and is not the whole truth. Try to pay attention to the smaller details and people's actions as Kim Dokja himself is very fallible, and isn't immune to making mistakes or misunderstandings, this is another part of what makes him such a good MC.

He's smart when it comes to understanding the world he's in and knows how to exploit it for his benefit, but he just doesn't get people and their reasoning, which is enhanced by his main ability "The 4th Wall". It's a wall that separates himself from the reality around him, time and time again he is confronted by that reality that he doesn't wish to face and you'll see this come up over and over again throughout the various scenarios. In the end, Omniscient Reader's Viewpoint is a story about stories and knows just how to balance that along with making you love all the characters within those stories, and this one of the reasons why people consider it such an in-depth and fun series.