I was reading the Rashi to Dev. 16:22, in which he says that setting up pillars is forbidden "now" since the Canaanites introduced them into their idolatrous worship.
I was looking for the source of this statement and ended up in the Tosafot of Avodah Zarah 11a (ד"ה ואי חוקה חיא) in which they create two categories of non-Jewish customs: for Avodah Zarah and the rest for vain and foolish reasons.
My question is, nowadays, just as we changed setting stone pillars because Canaanites were doing it, why haven't we today changed many other things like praying in general just as non-Jews pray too, and mostly everything!?
Could you help me? Thanks a lot!!