Probably something to do with newer generations being mostly atheist and needing to replace the God-shaped hole left in them with other ideological stances, this time graciously provided by political movements. Controversies like plastic straws are a thousand different filioques, except in a political package.
What exactly is about that god-shaped hole that people need filling?
Some parts I can understand, like the social need filled by communal rituals. But I suspect it is something deeper. I suspect it is related to a need to distinguish ingroup and outgroup.
