“I’m saying the minhag started from poskim deciding that for some legitimate reason”
Who? When? And why didnt they write it?
More to the point though (and this is my point you havent addressed) , what is that legitimate reason. does the Rema hold simcha is an actual halachic requirment for Birchas Kohanim? Is it a requirment for any other mitzvah? Do you know if he has a source for this?
I’m not sure you are trying to make me sound like a bad person.
I never said “lied”, I never said “it doesnt make sense” (dont you get mad when people put words in your mouth why are you doing it to me?)
The “we” you reference is the Aruch Hashulchan among others. I did not call not duchaning a “minhag garua” we arent seeing through anybody. The Aruch Hashlchan, Beis Yosef, the Gra (indirectly) all say there isnt a good reason not to duchan.
yet none of them (including the Gra) say to start duchaning