Apparently you are not listening:
Libertarians support school choice or no government involvement at all. Parents can choose schools that support their values.
Libertarians support the right to free and voluntary association. If someone does not wish to do business with someone else, the government has no particular say. BTW the cake thing is an extreme example setting no precedent.
Libertarians are certainly against government PP funding.
Do you even know what libertarians advocate?
I actually like most of what Libertarians stand for unfortunately there are too many Leftists who would impose their will on critics if Libertarians got elected power. That is what is troubling.