Mostly this, even if it's also a thing where religion and culture have intertwined long and deep enough that people unfortunately wouldn't know where one starts and one ends.

So, let me get this straight. Muslims don’t honor kill because religion? They honor kill because they have a cultural predisposition to honor killing? I mean honestly that sounds kinda gross.

Before you say they aren’t the only ones or something. I had to answer someone else before you. So, they got all the links showing that worldwide Muslims do the heavy lifting on honor killings, and we’re talking Muslims from the Balkans, to the Middle East, to Muslims in America, and Muslims in Europe. We are talking Muslims of every color.

I would think that Muslims in very different geographical areas would have slightly different cultures, but same religion.