I know we all have a lot of respect for astronauts, but the fact is that they blindly trust whoever tells them "it's safe enough" that it is, actually, safe enough.

Artemis II doesn't need astronauts to do its flights. Astronauts are trained to survive in a spaceship that does not need them to do anything at all. That it is their dream to survive in such a spaceship does not say at all that they have any valid idea of how much risk they are taking.

We can say "maybe the astronauts would accept to fly knowing that they have a probability of 1/30 of dying" all we want, but that doesn't answer the question here, which is: what is the probability that they die?

The article says "we don't really know: the first test flight was very concerning, and we used the exact same methods to prepare the second flight, so we won't really know how unsafe it is until we try it".

Sure, they have made tests on the ground. But the first flight proves that those tests are not enough, otherwise Artemis I wouldn't have had those issues in the first place.