Everything about the derelict was scary and forboding even before finding the giant in a chair with a hole busted out of his chest. The egg room with thousands of alien eggs that look like spores would be terrifying to anyone. You would have to be crazy to stick your head in that egg. However given the nature of the film it doesnt bother me, same with covenant.
Also why would oram suspect david was involved in Rosenthals death?