It’s fairly well established that feminism is broadly the movement to bring about the equality of the sexes (i.e. the movement against sexism).
Why does it feel like “anti-sexism” as a term might be born from a misunderstanding of feminism as being misandrist? I don’t see any articles on “anti-sexism”, anyone have clarity?
Short answer: because feminism is primarily for and about women, and what it does for men is mostly collateral. As men’s rights issues are not the centerpoint of feminism, the respective issues can easily get drowned and ignored - not out of malice, but out of misaligned priorities. Antisexism is a wider term that includes feminism as a part of it. It aims not to pick sides, and is equally about women and men. Antisexist perspective is one of equal treatment of gender-specific issues, and equal attention to all.
Long answer: what other folks said.