What does Obi-Wan mean when he says "only a sith deals in absolutes"?

According to some site, "The words "deals in" refers to how Anakin thought he had to fight Obi-wan. It was a battle deal. The only reason Obi-wan fought Anakin was because Anakin was attacking.

So... to expand Obi-wan's dialogue, he was meaning, 'Only a Sith will engage in combat due to absolute reasoning.'" According to some youtuber "Jay Flippen", "The communicator of this kind of informal fallacy is attempting to make their receiver fall on one side of the knife of their future/current conflict. Although the threat of world war might very well pressure a group of people (country) to understandably take drastic efforts in identifying their allies and enemies by labeling them as in-group and out-group, individuals with unconscious authoritarian drives frequently mutter words like these when attaching themselves very strongly to influential social actions.?" Based on my very limited (non-existent) knowledge of Star Wars, I believe the line is contradictory and Obi-wan contradicts himself by saying it.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.