It's about whether the Republicans are only fighting a culture war.
What are their policies on healthcare? Infrastructure investment and repair? Climate change? Transportation policy? Childhood poverty? Topsoil depletion in the midwest? Extreme severe drought in the southwest? etc. etc.
Why do they appear to spend so much time talking about things in the "culture war" realm and so little time advancing policy agendas about things that really matter (not that are no "culture war" issues that matter).
Progressives are quite clear about the metrics by which they consider one state of a society to be better than another. More equality of opportunity. Less income/wealth inequality. A more even distribution of GDP between labor and capital. Reduced discrimination against protected classes. Improved health outcomes. Equal treatment under the law. Above all, the type of society you would choose to live in if you could not control who your parents were or where you would be born.
It is far from clear what the conservative/Republican equivalent of this is.