Having to compress it to 10,000psi to get a useful amount of energy, hydrogen embrittlement of steel, very wide upper and lower explosive limits, burns with a clear flame. I can't imagine hydrogen ever being used by consumers, it's just a complete liability.
Modern direct fuel injection systems today can compress fuel at almost 30,000psi (https://en.wikipedia.org/wiki/Common_rail), so 10,000psi is nothing. Hydrogen is much safer than batteries, this is a fact.
Any significant amount of Hydrogen gas is crazy dangerous to work with because it has such a wide explosive range.
Reading through the Saturn V manual (as you do), the design aspect that surprised me the most was just how much of the hardware was dedicated to hydrogen gas leak detection! It was everywhere. Even the skin of the thing was a two layer affair in places, deliberately designed with channels and helium pressurisation in a complicated way to flush even the tiniest leak through long channels to the nearest sensor.
It sounds crazy until you realise that even a pinhole leak would release gas that rises up and concentrates in spaces between bulkheads and tanks where it can rapidly reach an explosive mixture ratio.
Hydrogen is not safe at all.