The possibility that members of a small religious sect which prohibits marriage outside the sect would all be related is not particularly interesting.
The claim that going back another thousand years would make all human males share descent from a single male -- that would be interesting if the data supported it.
Pondering...
Maybe they're not all over it because it sorta dis-proves their thesis.
A Moses type person was quite possible at around the presumed date.
If one accepts that, though, all the other Y chromosome variants in other folk argues against Noah being the originator of modern Y.
So, you get either Moses or Noah, but not both.
I'm overdue for a caffeine fix, so this may be way off.
HMmm... you guts find it 'interesting' if the same thought is applied to Noah!