To suggest a feature or describe an issue on a product you're working on can be most easily done by just talking to people, for example by bringing it up in a design or planning meeting with the team and management. If it gets picked up it will get added to the schedule in some written form. It does not need to specifically communicated by email or written down, unless explicitly asked for.

Therefore the main purpose of writing the initial suggestion down is so there's a record of it for future use. Either to cover your own ass when management/auditors/lawyers get involved, or to say you were right and management was wrong and make yourself feel superior.

It might be not required to write it down but there's no need to say that doing so attributes to one anything beyond act of communication.