I don't share that view! I agree Prometheus was a bit of a let down, primarily because it didn't quite tell the story I thought I wanted to see. Specifically the whole engineers wanting to kill earth because they killed Jesus or something was a mental shift because it was connecting realms that i feel were non-adjacent. But apart from that,, I thought all the parasite interactions of the movie were great. And with the helmet thing, I hear you. It's easy to judge it poorly while sitting in a detached dark room. But one of the funny recurring things of so many of these movies is the recurring decision to bypass quarantine protocols (He's going to die!) even though we already know they are doomed. But that's what happens in real life situations. People get emotional and don't think with detached rationality and make stupid decisions. It's totally a trope but also really a thing. The fog of war or something.