RebE >> Tosfas in Tractate A’Z
These rulings might change over time and place? Chaucer describing varying level of frumkeit and hypocrisy of medieval non-Jews. Do we go my majority? Are we ok trading with cafeteria catholics but not with more observant ones?
Also, Protestants are post- R’ Tam – and probably prove his point that they do not really believe in a’z…
Also, I think you can discern among Ashkenazi/Sephardi Rishonim more tolerance towards the religion near them. Not sure whether this is caused by fear and censorship or by tolerance developed from familiarity