If it really were about children's rights, then they would also be all for supporting families economically and putting resources into education. But they do not. The most probable explanation is still control over female reproduction.
This seems to be the crux of our entire political situation as a country (has been for awhile, though certainly feels amplified the past 15 years).
Ask, talk to, or overhear any of the people in texas who support the bill, and not one of them will give a damn about, or even consider as an issue, "control over female reproduction". That is your concern, not theirs.