Some roles are evolutionary, but even they are taught. This doesn't mean they're necessarily illogical or should be done away with - all roles appeal to some aspect of innate psychology - but they are still taught. So much of social behavior is taught. Why do you think we and most other social mammals have such long childhoods?
The long childhoods are evolutionary but because it has been with us for so long.
I do not think it is wise to try to change this, on a mass scale, when there is no proof that it fixes anything.
We have long childhoods because we invest more in each child than the typical animal does, for survival reasons.
Teaching is a part of that, but gender roles are not harmful, as long as flexibility exists.
But a lot of gender roles ARE illogical and should be done away with. A lot of them are oppressive, to both men and women. A lot of them are pointless. A lot of them are just blue team vs. pink team.
Some aren't even gender roles, but old top down beliefs on what should be gender roles.
That's why they are being contested.
Language derived gender differences (him/her, she/he) wasn't created by fiat, it was done so organically.
Studies on the raising of androgynous children haven't shown any impairment. If anything, such kids tend to be more confident. Their expression takes the form they want it to take, and only goes as far as they want it to go. As opposed to our habit of putting a football in a boy's hands when he's still an infant, or a barbie in a girl's hands at the same age. There are some profoundly negative things those streotypes can encourage if they are harshly enforced, which they often are.
There haven't been much of any done and the long term results haven't been tracked.
Identity develops regardless. People born into extremely conservative homes still turn out gay or trans. People who grew up with gay parents still turn out straight and gender normative.
If that's the case, why try to change it at all.
Boys with GID, don't dress like women because it's awesome, they do so because they're internally women, it has a natural appeal to them.
While I think this program may be a bit overkill, I don't know of anything suggesting it will cause harm. The extremes of the gender scale are unnatural to most people, and we try to force those extremes on most people. That is definitely negative.
Not all stereotypes should be eliminated, they can be useful.
But then again not all women should have officially classified gender roles because some do stray from the norm.
I'm fine with that.
What I'm not ok with is socializing kids to believe that all people are exactly the same.
It kills the greatness of the variety of people and their differing genders.