I see arguments of this form from Christian Nationalists a lot:
1. If we were Christian, we would ban {a bunch of things like feminism}.
2. We really want to ban those things since they're bad.
3. Therefore, we should force Christianity on folks.
This is an affirming the consequent fallacy.
Further, we don't need to force this religion to ban bad things. Christianity, as history has shown, also brings its own bad things.
You're arguing against straw men claims that CN's never make.
Christian nationalism is not a theocracy, nor does it advocate for one. It advocates for basing law on a Christian moral framework because laws are simply moral "ought" claims, not just "I want because .. feels".
We supposedly already have that, since the legal system is based on the Byzantine Justinian Code, but that's being dismantled at record pace as you're seeing in real time.
@UncleIroh How does this demonstrate you can't get a secular ethics? Communism is not an inevitability of secularism. In fact, it's more likely to be considered under Christian ethics.