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The bandwidth problem is with the human ability to process the information, and that's where a neural link could do some of that processing and push thoughts to us. i.e the neural-link could make sense of that visual data, tell us things we don't notice or see.
That's an application of computing in general -- process data then show us some digest (in visual form, text form, whatever). It has nothing to do with BCIs, and it works very well with other kinds of interfaces (e.g. AR for the example you give above).
I agree, AR could do that, and I guess thats my point. My view is that BCIs are just an alternative to AR, phones, laptops etc... which may have specific use cases depending on how good this supposed two-way link really is.
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