What does “Noted.” mean in a text? Is it rude?

What six different Brads heard

Everyone has a Brad: the anxious little security guard in your head. Six of them read “Noted.” and every one of them is sure. None of them have evidence.

• The Archivist · Division of Evidence'Noted.' They have also started a file. Brad respects this and fears it.
• The Proofreader · Division of Outgoing Messages'Noted' means it was written down. So it can be held against us. Later.
• The Volume Officer · Division of DimmingWe explained too much. 'Noted' is the polite way of saying that's enough.
• The Fire Marshal · Division of Exits'Noted' is a closed door with a nice handle.
• Customer Service · Division of Keeping Everyone HappyThey are annoyed. Brad is noting that they noted it.
• The Forecaster · Division of Worst-Case Weather'Noted.' Brad notes that this is how storms introduce themselves.

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