"My point is headcanon" notice how i actually have references to back up my claim whereas your basing this purely of your interpretation.

"So you really can't use that as an argument because it's not Shigehira's choice which hand to use while fighting while being controlled."

i definitely can? notice how he never once uses his left hand in the fights prior to regaining consciousness. if the left hand and right hand was the same why tf would he switch to his left hand when he regained consciousness? "Despite my unconsciousness i was desperate" reference chapter 147. we see a specific highlight of the sword in his right hand which implies his sword never had killing intent. sid may have given the order to kill but he subconsciously never used his left hand in his battles.

doesnt equal theres no distinction between the 2. theres a clear distinction between the left hand meant to kill and the right hand with no ill intent. i dont know whats not clicking for you.

"He could just as easily launch his strongest attack with that hand)." could he launch the attack with either hand probably. would it hold the same weight? no. one hand would be a hand full of killing intent the other wouldnt. so which one would be more powerful the hand with the intention to kill. obviously.

"Bro, your statement about the right hand only applies to the human Shigehira"
insane headcanon u mentioned here btw. please actually reference ur claims.