Saying that homosexuality “should not be accepted by society” is an even stronger statement against gay people than opposition to gay marriage. Dictionaries define homophobia as prejudice against homosexual people. If saying that homosexuality doesn’t belong in society is not prejudiced, then what is?
Anyway my main point is that, whatever the question, or whatever your definition, JWs stand out as being more opposed to homosexuality than other groups. This gap will probably widen even further, until Watchtower changes its teaching.