What a chutzpah, and what small-mindedness, calling a minhag accepted by a very large segment of klal Yisroel “stupid”.
“Halacha: anything written in shulchan aruch”
Mechitzah isn’t in the Shulchan Aruch. Does that mean I can go to a non-mechitzah synagogue to daven?
He didn’t say Halacha is limited to what’s found in S”A.