The OP might have meant sex, but actually now that I think about it gender is probably more important here since that will be more closely linked to your hormones (have natural or supplemented testosterone or not) as well as what exercises you want to do (more lower body or more upper body, higher reps or higher weight).

In reality their is no reason for any difference in training across sexes/genders. It’s about goals and performance not sex differences - my wife’s training has always looked very similar to mine (strength and hypertrophy phases) but we end up with different physiques.

Doesn’t your anecdotal evidence exactly contradict your claimed point? If there was no difference between gender/sexes then you and your wife would end up with the same physique doing the same exercise. If you wanted to reach the same physique you would have to train differently, which is again, exactly what you are arguing against.

If we wanted to reach the same physique she would need to take a lot of PEDs. My point was poorly articulated - in reality if men and women train the same they will end up with different physiques based on the chemical make ups in the body. However if men and women want to “be strong” they should train the same, if they want to “run fast” train the same, “be lean and muscley” train the same. The idea that men and women should train differently (women do cardio and men do weights) is the biggest disservice that the fitness industry has done for the health of both groups. I guess that is what I think of when I hear “the sexes should train differently”

It actually filters by sex (male/female). Must be an innocent mistake in the parent comment.

Ultimately the filter boils down to how much T you have, which (at least from the context of strength training) isn't necessarily linked to gender or sex. I'm not sure how you'd communicate that from the context of a web UI filter, though.

That would be an oversimplification. Physical development depends on other factors besides testosterone level. Men and women are different genetically, even if they have unusual hormone levels.