It would allow the interviewer to at least ask some questions about some of the qualifications. If you thought you had fraudulent documents, that would not completely solve that problem. You'd still have to go out and check on those documents with the institute that issued them.
A good interviewer who has a reasonable knowledge of the cultural background and the context in which it's being done can find out quite a bit of information, make some very good judgments, and write them up and report them in an hour or two. We're simply not doing that. Everything is pretty well done on paper now.