The word “genderism” is quickly replacing the word “sexism,” but keeping the meaning of sexism.
“Sexism” is harder to discuss with many people. Just hearing the slightly taboo word “sex” in front of an “ism” is too much for many people to take seriously. You also cannot teach sexism with children like you can discuss other isms because it could be awkward to get into what the word “sex” means.
How will women ever achieve equality if the root of the word is considered taboo? It won’t happen. Replacing sexism with genderism makes more sense and will be more likely to achieve success.