These are warnings, not errors, and do not need to be output if the How To doesn’t require a supply or tool field. A warning does not prevent the item from being used in search results whereas an error would.
That said, you are actually not the first to have requested this feature. That means a feature request is already created and under review?by our product team here.
What’s next?
Our product team will assess feature requests in relation to other open bug reports and new features. Based on their assessment, the feature request will be given a priority. Our developers work on the highest priority first. Unfortunately, this means we cannot give you an estimate if or when they’ll start working on your request.
Feature requests are investigated in GitHub so this topic was closed in favor of the GitHub issue. If you have any further information that may affect the prioritization or help our development team, please leave a comment or subscribe to the GitHub report to get updates on the issue.
