Two Freuds present themselves in The Interpretation of Dreams . One Freud draws on prevailing concepts in the science and technology of his time to generate models of the mind. Were he alive today, he would no doubt be likening the mental apparatus to a computer rather than a camera, and talking in terms of silicon-based intelligence. But another Freud is concerned with meaning rather than mechanism, the metaphorical transformations of desire as opposed to the oscillation of energic impulses. From today's perspective, this Freud is not so much wrong as over-dogmatic.
Some dreams certainly seem to mislead and disguise, but others are given to truth telling.
Freud's essay into the mind's activity while we sleep was faulted by logical inconsistency and extravagant generalisation. It was not the universal key he took it to be. Nonetheless its seminal genius is beyond doubt.