What is circular in “don’t waste our precious time”?
It's circular to conclude that a feature has no practical application generally because among the current users of a product that does not have the feature, no users are using the feature.
The current user base of any product is naturally constrained to those whose requirements align with the features available at any particular time. The user base of a product often changes, becoming broader and larger, as the product matures, and its features develop.
Supporting the feature might broaden the user base to include those whose requirements match the broader use cases proposed, but do not match the narrower use cases supported so far.