Review Detail of Athame in An Immortal's Tales Of Demons And Gods

I expected to at least enjoy this fanfic, but I really can't. The beginning of the story is somewhat okay, MC lived on earth, died, reincarnated in a cultivation world, died, reincarnated in a Naruto world, he became strongest there and died. After his death he must have thought "Wow, I died and managed to fuse spirit and soul energy, I should just detonate my spread out energy, just what could go wrong?" Then he is reincarnated in TDG world as a member of Shen family, a son of OC (brother of the current patriarch). And surprise, his soul is damaged, he manages to get elixirs from his father to repair it faster. He knows that his father was poisoned by his uncle, he started to heal him, but what could go wrong when his father must go on a dangerous expedition? He could have given him some pills to help him a bit, it may not have mattered at all, but he just didn't bother to do it, because "What could go wrong?". His father dies, like some random thug, his sole role was to give him elixirs, but it didn't really matter. MC can repair his soul in one year, what does the author decide to do, heal him forcefully because why not? As a side effect, he can't cultivate in next 4 years. The author said that MC is cold and calculating, and because of that he can't have a harem, yet he doesn't mind his arranged marriage. The MC was cultivating for billions of years, but he supposedly isn't a "cultivation maniac", if he isn't one then who is? He doesn't have ane purpose, a goal, everything he does feels like he just came up with, I cultivated this technique in 2 of my lives, it's really great, but I don't feel like doing it this life. He decides to cultivate untested technique, because why not? And all of this logic discrepancies wouldn't matter as much if our MC who lived for billions of years didn't behave like a retarded kid who can do something intelligent when the author feels like it.