Moderators frequently change the text of FT posts without properly attributing their edits. There should be a rule that moderators should never be allowed to change the words typed by another poster without clearly denoting via use of square brackets what content was added/removed.

This is basic style guide convention. Allowing moderators are allowed to ignore such a basic style guide convention is effectively giving moderators the power to put words in other peoples mouths.

See, just as one example on proper use of square brackets and direct quotations:
https://writingcommons.org/article/i...ect-quotation/

Please implement a rule requiring proper use of square brackets whenever another poster's content is changed.