“Anyone who brings up kids is trying to manipulate you”
Any argument with such blatant oversimplifications is almost certainly lacking in nuance and can be ignored and dismissed.
I get what you’re pointing at: politicians regularly abuse these arguments, but that doesn’t mean it’s 100% of all arguments involving children.
If they use blatant, binary positions and you try to be subtle and nuanced you've already lost.
Go ahead. Play their game. Be nuanced. Argue in good faith.
Then watch as they accuse you of supporting pedophilia.