[Sock puppet]

Yes John, good points.
A more fundamental point is that Islam allows the marrying of cousins.
True the British Royal Family did that also.
However the world knows better now, but as Mohammad told moslems that
Allah said it was OK, it now cannot be changed.
Strange as Arabs being then an agricultural people.
It does explain much of their aberrant behaviour.

So that is a classical example as to how Islam is stuck in the 7th
century and destined to stay there forever.

"Islam allows the marrying of cousins"

So does Australia. There's no law against marrying your cousin, only siblings or direct ancestors and direct offspring.

Yes could be so, but it is not customary in western societies.
The British government was going to introduce a law against it after
a report to the Commons by the Midland Health Service in the UK.
I have a feeling nothing was done. The same here after a report by
the NSW Health Dept to the NSW Parliament after an enquirey into
Auburn hospital, some years ago now.

Yeah. Darwin married his first cousin, and they were actually even closer related, because there were prior inter-family marriages in their recent ancestry.