I didn’t say attrition overwhelmed the overall growth pattern. Most evidence suggests that it’s a proportion that increases with overall religious population, with compounding or confounding. factors (e.g. increasing or decreasing participation in a broader secular society).

Haredim “get away” with minimizing participation in many ways, which makes their attrition rates lower than comparable religious groups. But that doesn’t last forever; compare the secularization of Jews in Austro-Hungary in the late 19th century.