The rules:

1. No wishing for all of sexism to end/complete patriarchy to die/complete equality of all genders to be achieved.
2. No changing the past.
3. No physical violence.

​

If it was for me, I would wish that every time someone made factually false claims or misinterpreted/cherrypicked statistics in order to justify sexism, Clippy from the very old Word versions would appear (no matter if on the internet or in meatspace). Clippy would correct them, citing all relevant statistics one after another.

Like bonk bonk bonk "Oh! It appears that you are citing naval law about women/children first as evidence that there are parts of life where men are being discriminated against because of their gender! Did you know that this naval law did not even level the field and even with it, women still have a survival disadvante?" and then it would read them the abstract and a few excerpts of this article: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3421183/