"Thank you for your feature request. Submitting thoughtful requests like this takes time, and I appreciate the consideration put in to prepare it. Unfortunatel

"Thank you for your feature request. Submitting thoughtful requests like this takes time, and I appreciate the consideration put in to prepare it. Unfortunately, the feature request does not align with the goals I've set for this project, and I will not be considering it or any related requests for the foreseeable future. Specifically, I intend to accomplish [your desired outcome of the project] and do not want to reach that goal using the methods you have described. I sympathise if this is a dealbreaker for you. I have appreciated your patronage up til now, and understand if you need to seek alternative software solutions as a result." You can follow up with a more "direct" comment if they don't get the message from the above. However this should suffice in most cases.