Purity culture is viewed as a joke because the same Christian community that propelled it in the 90s elected a twice divorced, thrice cheating, convicted sexual predator who was friendly with the world's foremost child trafficker into the presidency. Twice.
The best ways to be "pro life" are by giving our teens a robust (and shame-free) sex education, providing paternity care for BOTH parents, expanding social welfare to provide flexible funding for childcare, and being present to the poor, widowed, and vulnerable.