I guess, is just that to think that FTL matters and ties up with causality means to grok relativity, and causality issues may be a result of a layman physics views of wormholes, but it generally isn't really a part of it.

I think you are making a category error by saying that wormhole is too loaded a term for the layman in this instance. Non-technical people are generally better at dealing with ignoring the details of a metaphor anyway.