Your question pertains to two specific issues.
Documents can be classified as “secret” or “top secret”. What we are seeing is that some documents should not have been classified as such. As you say, when people see a document that is classified as “secret” or “top secret”, they often redact it as a security measure because they are afraid of letting secret information through. If classification was done better, some information would surely be transmitted more quickly.
Moreover, some documents that are 50 or 60 years old are still classified as “secret” or “top secret”. We would like there to be a program under which the government would look into those historical documents to determine whether they are really documents that are still secret or of a sensitive nature in 2022 or whether, on the contrary, they could be declassified so that people would have access to them more quickly.