Complex sentence: Most modern-day antifeminists often oppose feminism on naturalistic rather than religious or traditional grounds, as they view feminism as a denial of innate differences between the genders, and an attempt to reprogram people against their biological tendencies.
Split into simpler sentences: Most modern-day antifeminists oppose feminism on naturalistic rather than religious or traditional grounds. They view feminism as a denial of innate differences between the genders, and an attempt to reprogram people against their biological tendencies.