Well how are you defining meat? Terrestrial insect meat and crab or lobster meat is structurally pretty much the same. It's all muscle fibers.

The big difference is that you can't really extract the insect meat like you would with a crab, so you're stuck eating the whole thing, meat and everything else, which is probably where a lot of the apprehension comes from. And to be fair I think that's a pretty big difference. A lot of cultures try to avoid eating "everything else" up and down the food chain.