The Talmud reports the following view about Gentiles who live outside Israel:
דאמר רבי חייא בר אבא אמר רבי יוחנן גוים שבחוצה לארץ לאו עובדי עבודה זרה הן אלא מנהג אבותיהן בידיהן
These sages seem to be saying that the idolatry of most Gentiles does not count because they do so only out of sense of tradition rather than a sincere devotion to alien gods. One wonders whether this is a special leniency for Gentiles (that insincere idolatry is in a sense permitted) or whether these sages would permit Jews who grew up in an idolatrous tradition to similarly participate in insincere idolatry?