A plain-language explanation
Keyword stuffing is the unnatural and excessive repetition of keywords in content in order to manipulate search results.
Where it helps in practice
Excessive phrase repetition hurts readability and may look manipulative even when a brief has technically been satisfied.
The decision before implementation
Remove percentage requirements, use contextual vocabulary and retain only wording needed for clarity.
How to verify the result
Review naturalness, reader comprehension, intent coverage and quality loss after automated optimisation.