Rambam in A”Z 2:2 writes about reading a”z. I think it is assumed that
kefirah is no different, and hearing is no different. I don’t know if Sh”A in Hilchos A”Z explicitly refers to it, but he does refer to the issur (“Al Tifnu”) in Hilchos Shabbos (307:16) in regards to reading.
The issur applies when there is a chashash that someone will ch”v be swayed, and unfortunately we have seen many frum people fall into bad hashkafos or outright kefirah from exposure to the prevalent secular worldview.
BTW, leitzanusa d’avodah zarah is muttar, so I think what you posted is okay, since you painted it in a negative light.