No, proving the moon landings fake doesn't prove ISS fake. But it does thoroughly discredit NASA that we can't simply take them for their word.
Nevertheless, independent of the purported moon lands, there's probably an hour long compilation of "bloopers" where the ISS footage was exposed as fake. Sure, this doesn't "prove" that it's ALL fake, but at that point, you can't believe anything they tell us.
This disqualifies what by far WOULD be the most conclusive evidence for a globe earth, pictures and video from space.
Dr. Sungenis conceded this point to the Flat Earthers, that there have been obvious hoaxes, and he agrees with the (legal) principle of Falsus in uno, falsus in omnibus ... false in one thing, false in all things. If a witness has been exposed for even a single lie, he becomes completely discredited, and none of his remaining testimony can be considered credible for evidentiary purposes.