I assume you mean they can have parasites, not they do. In which case, so can most things. People are fine with eating cows even though they can have parasites. I have never actually heard of any significant issue with eating insects. I've only heard of them being great protein options that require much fewer resources to produce.

Perhaps, but you are aware that shrimp, lobster, crab and fish in general all have parasites too right? People get sick from seafood pretty often

No.

Not sure whether this is about seafood or racism against District 9 residents.