Comments of chapter undefined of Supreme Lord: I can extract everything!

I don't really agree with this decision but I'll try to be neutral about this. There's many situation factor to weigh about this. The "history" whether it's true or not, the 10 days limit, morality, etc.So what happens now since you killed the "potential danger"? That history thing and skits you boast about is only for this?

There is a high chance that he's going to extract the soultrait

I don't know man, this while plot sounds too convoluted to me. Killed the guy without any attempt to understand or make sense of him just cuz of some book! He did not even wait to see what happens in his dreams. What if the book is a fabrication? What about other summons? Will he scrutinize every single summon and kill those he doesn't like? The more I think about it the more this plot point feels like a can of worms that'll make this story worse! Let's see what happens.

He will get the forbidden spear art and used it

This doesn’t make any sense. How can his ancestor both be erased from history and recorded in excruciating detail to the point that the main character wanted to kill him right away? Those are contradictory things. What really happened was that he read about the dude in one book and then decided that he needed to die.

The think here is that in the future if mc does nearly the same stuff his ancestor did so what makes him different from his ancestor. So is he going to kill his future high lv summons if he finds few history books saying that they where evil ?Also history is written by victors, and in the future the mc becomes to op that rest of the world has to team up and they starts spreading rumor's that mc is a physopathic mass murderer which make the entire world hate him.

If a lord or adventurer becomes a summon after death, does a summon have the ability to get resummoned after it dies?

Yeah killing is bad. I try to not kill. But it is difficult so of course, I kill sometimes just like everyone does. There is very few who have never killed. ant, flies, animals for food,fish and sometimes people...

Could you not have mad him thougher