The document urges journalists to “avoid terms like biological sex, along with biological male and biological female, which opponents of transgender rights sometimes use to refer to transgender women and transgender men, respectively.” AP argues that such terms are “redundant because sex is inherently biological.” Yet opponents of transgenderism use “biological” to emphasize the truth of biology against the very ideology AP insists journalists never mention.

This is an important one. People should just say "sex" but the modern gender ideology also often loops in sex to imply it is a social construct. This forces people to say "biological sex" and yes it's redundant but it's a forced redundancy because of these very people.