I don't post things here to create arguments, but just for people to see and comment if they so wish. Having looked at the responses to the OP I thought a bit more from me would be worthwhile.
The OP was intended to focus on the quotations from the children (hence the posting's title) - which I thought showed they had been encouraged to think of themselves as entitled, and legally entitled at that, to have fun and enjoy themselves with things that are deadly serious. They had been given no awareness of the likely progression for many children to experimental and then lifelong medication, bodily mutilation and reproductive sterililty; or why many people, especially women, view the things they want to play with as vital to their wellbeing. As people here commented as well, the kind of things the kids mentioned were more like what we always called "gender roles" rather than bodily sex - which is the issue in question. One might ask how the kids got these ideas (which parents then accepted) other than at school, and that is a big issue in this country at the moment.
I can't say I thought the story was really an example of American "culture wars" (which the Dylan M. and Budweiser beer "boycott" certainly is, for example). The issues involved here are the same kind of thing people are discussing in the Uke at the moment, and are looking to national government (and the Secretary of State for Education) to deal with, as we lack the equivalent of state legislative authority.
Kansas is certainly not a rabid right-wing state, like Alabama or Tennessee, or a wildly populist one like Florida or Texas. It has been overwhelmingly Republican since the Civil War, like most of the Prairie States (such as Nebraska and Iowa), and returns all or nearly all Republicans to Congress. But Kansans are very decent and moderate for the most part, many of them farmers. Bob Dole, one of the most reasonable Republican presidential candidates, was a Senator from Kansas. Government care and people's attitudes would put many people to shame in this country, although it is right to say that the organised Republican Party across the USA is at war internally at the moment, and some of the contestants are extreme. But the part-time legislatue of Kansas is dependent on decent people and overall the proposed laws would not be unreasonable objectives here.
I was absolutely not intending (and do not intend) that anyone should cheer on or give support to the Republican Party as such, or do more than recognise some of the parallels and warnings of the way things are working out in the USA. Kansas has a Democrat governor at the moment, who is expected to (unsuccessfully) veto the Republican bills, and thereby state a position on the issues which it would surely be good if it was possible to persuade the party to change - however that might be done.