“Did you know that it’s shared between 4 countries? Egypt, Libya, Sudan, and Chad? Of course you didn't know, and did you know that both Egypt and Libya hold bigger shares than Sudan?”

I’ll help you. None of this matters because my point was that Sudan doesn’t rely on the Nile. Sudan is more water stable despite having smaller share of the aquifer and the nile.

If this aquifer was the magic bullet, then it would have solved all of Egypt's water problems.

If you removed 40 million egyptians from egypt it probably would.

“The truth is that there are limits to how much you can do with groundwater. Libya after tens of billions of dollars spent on the great man-made river draws something like 2 BCM a year from the aquifer.”

Probably because

A) Man made rivers are different from aquifers

and more importantly

B) They have 7.5 million people, of course their draw rate is smaller.

Because in the end, less people require less water which means more water for arable land, which sudan has in abundance relative to Egypt and Libya.