To argue that ‘freedom of information’ should be part of ‘freedom of speech’, you then have to decide which information you mean. Do you mean all information? In that case, you, as an individual, would not be allowed to keep your SSN, your bank PIN, etc., private.

Individual citizen’s do not ‘need to know’ all the particular details of the government’s inner workings. They can form opinions based upon the outward results. Your ‘right to know’ does not supersede another person’s ‘right to safety & security’.