sushe -“So if the Kehilla’s minhag hamokem was to have more than one wife, when they move from Morocco or Iran to Israel or the U.S., their minhag hamokem stays the same it always was, even if their new countries goyim do differently.”
Let me rephrase my post. If the couple moves from an arab country, then you’d be correct -he would not need permission to add another wife. If he gets married in England, US or Israel, then what I said above would apply, even if he is a Sefardi.
And btw, it just happens the Jews Minhag is what the Goyim do. In Iran the Goyim have more than one wife -so the Yidden do to, etc. in every country you look at.
“Also, what makes you opine that if she burns his food isn’t the halacha we pasken on (not considering the cherem, if we assume not everyone was mekabel the cherem)?”
You misunderstood. That Halacha is brought down in S’A for e/o.
Just that (Most?) Meforshim don’t learn that it means literally.