>>212870708 (OP)I started reading the comics and am halfway there. Unironically it is because he is a deconstruction of "God" or "God-like" characters in comics. Just like the biblical Yahweh he can see the past, present, and future all at once. But if he can see the future, that suggests the future is predetermined, which means there is nothing he can do to change it since it's already set in stone. It is similar to the "problem of evil" in Christian religion - if God can see the future and is all powerful, can't he prevent all evil? Dr. Manhattan in the comics isn't even able to stop the Comedian from shooting his pregnant lover in Vietnam, despite foreseeing that and having the ability to do so, because he can't change the future.
So despite being the most powerful person on the planet and basically being a God, he is, paradoxically, also weak in the sense that he has no agency. His entire backstory is him having no control over his own life (he never wanted to be a scientist, he wanted to be a watchmaker and was pushed into it, he didn't choose to become Dr. Manhattan he became that way by accident, he ended up being a tool for the government not out of his free will but because events spiraled out of his control). The fact that the character is a "watchmaker" is heavily referenced in the comics - that is a clear reference to Deism, which posits that God is a passive observer who sets the universe in motion, "like a clock", then steps back and observes. It is the same with Dr. Manhattan - he is a character who is all powerful but ironically has no power, since he has no agency.