Now, there is water everywhere and nobody cares.
It's also the fact that the moon isn't exotic enough for the media/masses.
An external source of water is completely unnecessary for this. The idea behind hydrogen as a fuel is that you can react it with oxygen to produce water, which is a lower energy molecule. You can then harness that difference in energy to do whatever. The amount of water generated is equal to the amount of water needed to generate the hydrogen (and oxygen) molecules in the first place. It is a rechargable battery.
H is needed for water (for people) and propellant (for rockets). The rockets in particular are open systems and must be, so need a plentiful supply. If you can find a good source of Xenon, you can use that in some applications instead, but that's probably harder than H since it doesnt form more stable materials like H2O.
Some life forms seem likely to be able to survive that kind of ejection, and a long trip through space, and re-entry in a planetary atmosphere .
If we find life on the Moon, or Mars, or Europa, it could turn out to be that it originated on Earth. It would still be an amazing and extremely interesting discovery, but not the momentous discovery that finding true alien life would be.
When considering the possibility that Earth life has spread to other parts of the solar system, one should also consider the possibility that it went the other way. Just as ejected material from Earth can reach other planets, ejected material from other planets can reach Earth. Some believe that conditions on Mars once were more favorable for the origin of life than they were on Earth, so it is a possibility that life started there, and then spread to Earth. Around 0.2% of meteorites found on Earth are thought to have originated on Mars.
Needles to say, we live in a society where many base there beliefs on blind faith, and those who do are almost impossible to convince of something that goes against their faith. Even if simple life was found on the moon, they wouldn't believe it unless it was the kind of alien life from movies that invades earth with spaceships.
anyways, mercury has way better ice deposits than the moon does and no one cares.
EDIT: oh yeah the apollo missions found hydrated volcanic glass beads that were ~15ppm water, i'm not sure how this finding relates to that one but don't get the idea that the quantities involved will be large on a local scale though they're probably much higher than that.
It summarises the content so you don't have to even visit Space.com. Problem solved.