That would be juuuuuust about the dumbest thing they could possibly do. It would mobilize gigantic swaths of voters who are heavily invested in rhetoric over fact-checking.
Doing away with Roe mobilized many of those voters who could be considered to be fence sitters towards the left. Removing church tax exemptions would move them right back and it would do NOTHING to solve the problem, because while the actual big offenders are happily USING the hell out of that tax exemption, they’re rich enough that they’ll get along fine without it.
It WOULD hurt a whole lot of TINY churches that employ 1-50 people per church and actually do community work, though. All of those would go away. That’s a LOT of rural food shelves.
I’m largely against the religious tax exemption, but that’s a problem we should worry about AFTER we can replace the nationwide infrastructure we’d be dismantling by doing so with something at least as effective as what’s there now.