Our society as presently constructed, with no moral principle other than “consent,” has no argument against these people.
Folks know right from wrong. They knew it from three years old. Nothing new here. They are listening to Satan.
With this incestuous couple: chalk one up for the Adversary.
When mother dies she will meed her Maker. There will be hell to pay...literally.
One can ONLY hope that when mother kicks the bucket son will find consolation with Jesus.