"No! You're turning them into lesbo feminazis and fairy faggots!" is the political-debate response.

Modulo your deliberate use of slurs, why is that not a valid objection. In other words, are you sure you understand the full implications of this "sociological engineering project" and why should the child be one of its test subjects?

I have to support and emphasize your response here.

The attempt to make those that disagree appear to be bigoted just isn't reasonable. Even those who endorse without judgement the lifestyle of being---and overtly displaying---what some people may call a "fairy faggot" have good reason to be wary of artificially forcing particular gender identities on test subjects. In fact, it is those who have or have in the past had their gender relevant identity features crushed who are in the best position to understand the risk of this kind of intervention.

Actively changing the environment and---explicitly or implicitly---enforcing expectations about how people should behave has significant consequences, not always good. And "gender neutral" isn't a neutral intervention but instead an artificial intervention towards someone else's arbitrary ideal. Even the described intent of the project hints at this: "their inherent gender biases will be far less noticeable" is very similar to "the gender identity they are instinctively drawn to will be crushed out of them".

If "sociological engineering projects" are to be done around this area I endorse only those that engineer towards freedom to choose one's own gender role and actively crushing prejudice, judgement and presumptive influence of any party over the expression of another. Whether or not said party happens to be an authority with a conformity agenda.