What? Is this a joke? Lox and cream cheese with onion on a bagel is now subject to a chumra?
Wow. Your vitriol really knows no bounds. And it is amazing how ignorant you are. One would think you would at least find out a little bit before going on your anti torah rants.
It is the Beis Yosef (You know, like Rav Yosef Karo, you know, like the greatest halachic codifier since the rambam, you heard of him, yes?). Many sfardim follow it.
Really, I used to think you were anti-torah. But now I see that you simply don’t know what the torah is. You should learn a couple of pages at least, before you start criticizing.