Jew’s Filet Kosher [?]

Technically, filet mignon is as kosher as any other cuts of meat but the problem is the location near the sciatic nerve, which is Biblically forbidden. That makes no sense to me even after reading Genesis. Thus it’s hard to find kosher filet mignon, especially in the United States, where I believe most slaughterhouses sell the filet Mignon to the best butchers.