Another issue: If two Starships, 1) the tanker, and 2) the Moon-bound vehicle, screw up in LEO and blow, how many satellites will get hit by the debris? Will the International Space Station be in danger? There are so many things up there and, gee, I'm just guessing, but SpaceX will just declare bankruptcy and no one will see a dime.

Musk's engineering philosophy of just iteratively trying things and then, uh, learning from your mistakes should not be allowed here. The stakes are utterly too high.

And besides, the landing zone on the Moon will not be just some sweet empty flat plain. It'll have boulders and even little crater-lets that, just my opinion, don't make sense with a skinny 15 story(?) top heavy vehicle. Just sayin', you know.