The issue for the christofascists isn’t that children are being indoctrinated in school. The issue is the deprogramming of the indoctrination to fear, hate, intolerance, and self-loathing that they get at home from their parents and at church from christofascist leaders.
Schools don’t make people more liberal, exposure to reality makes people more liberal.
If they were actually interested in protecting children from grooming and abuse they would be protesting churches. This is about the fact that their obsession with LGBTQ makes them feel icky. I mean, how much time do they spend imagining scenarios involving drag queens and children? That’s not normal.