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.
The same kind of evidence that supports the common descent of the Kohens fails to support all men having a common ancestor at the time of Noah. It's a case where reasonable speculation is supported by evidence and silly speculation is not supported.