In a sense it sorta does prove their case. Prior to puberty boys and girls look and sound very similar. However, they're dressed differently and expected to behave differently. A boy who likes dolls and dresses or a girl who likes to get dirty playing in mud will be considered weird.
If we didn't have a "boys do this, girls do that" mentality the world would be a much better place.
This is nonsense, and not just nonsense, but both easily disproven and highly destructive nonsense. Like all dangerous lies though, it
does have a little bit of truth in it, which is part of why it is so dangerous.
1. Yes,
infant boys and girls are almost indistinguishable if their genitals are covered, but that is functionally
only true at that level.
2. Even infants though, show differences in
behavior. In a study done on what images infants focused on more just days after birth, there was a distinct preference in boys for looking at objects, and girls for looking at faces. The only place this pattern was reversed was in the case of girls exposed to abnormally high amounts of pre-natal testosterone, at which point those (extremely rare) girls tended to have more object fixation, like the boys.
3. With a few outlying exceptions, the more a child grows up, the more readily their gender can be distinguished. Voice is a good one; voice even from an early age is something that can instantly be clearly recognized as male or female, even for other children. Unless a child is overweight, you'll see differences in their physique well before they hit puberty.
4. Facial features. Again, there are some rare outliers, but feminine and masculine facial features very clearly develop well before puberty hits. Sure, puberty is where facial hair sets in for guys and a girl's chest starts developing, but the face is very discernibly different before then.
5.
Behavior patterns. Boys are
extremely noticeably more competitive, aggressive, physically active, etc. This
also emerges well before puberty hits. Christine Hoffsummers talks about these behavior patterns quite a bitt.
One can make a distinction between gender and physical sex. I think that's what the professionals are doing. Physical sex is a simple matter of someone's reproductive anatomy. Gender is less absolute.
No. The distinction between 'gender' and 'sex' in humans was specifically dreamed up by radical ideologists,
exactly so that they could play word games with it.
This:
Covers both that, and the grotesque history of political transgenderism fairly well.