The problem is that they don't acknowledge this scripture in the correct context.
Ephesians 6:12
"Because we have a struggle, not against blood and flesh, but against the governments, against the authorities, against the world rulers of this darkness, against the wicked spirit forces in the heavenly places"

The problem is that they don't acknowledge this scripture in the correct context, because if they did they wouldn't be putting their entire trust in these authorities but attributing everything to only Romans 13.
Ephesians 6:12
"Because we have a struggle, not against blood and flesh, but against the governments, against the authorities, against the world rulers of this darkness, against the wicked spirit forces in the heavenly places"