Postsexist

It's also notably different from defiantly politically incorrect humor, which revels in its flirting with racism and sexism in the name of free speech, but doesn't argue or imply that we live in a postracist or postsexist world.

Source: wiktionary

In the case of Star Trek particularly, its creator, Gene Roddenberry, conceived of a series that imagined a social world that expressed ideals of a postracist, postsexist, post religious (and implicitly postcapitalist) and peaceful earth governed by a unitary government, conditions that dif not exist in Roddenberry's lifetime and do not exist today.

Source: wiktionary

And part of what grounds the possibility of the joke being presumed to be “post-sexist” or “ironic” are national identity claims about Canada being a nation of equality between the sexes (even in the face of continuing gendered inequality).

Source: wiktionary