I hope this "dad" is hit by karma. Maybe he'll get run over by a bus or a train or something. That would be pretty cool.
So you're saying that anyone you or other people find disgusting or perverse, should die by being run over by a bus or a train???
You mean like a man sticking his penis in another man's fecal-elimination canal, using it as an artificial vagina??
And what of his long lost daughter, the one most stringently advocating that the marriage happen between them? Do you wish she also was run over by a bus or train? Why or why not?
Keywords in blind-justice "consenting adults wishing to commit to each other in marriage". You are not allowed, once the public can no longer weigh in on individual's qualifying for marriage, to arbitrarily deny a pair (or group) of adult family members from having sex together or marrying.