Indeed, the concept of sensitive information is currently undefined under the current law and would be under the proposed law. That normally leads to what is called the “contextual application” of what is sensitive: It's what kind of information is at play. Is it financial? Does it concern children or health? That would be generally sensitive information under “Interpretation”, but there's no definition in the law itself.
Is it a flaw that there is no definition? At the end of the day, the definition will always be contextual. I think it is possible, though, to have a definition that would be non-exhaustive and refer to certain factors—financial, health, children, etc.—as factors that would be defined is normally sensitive information, leaving an out clause, a residual clause, for what is not defined. I think that would be an improvement.