Dealing with a veiled emotional rejection
When someone keeps asking you for more data, documentation, or justification for your change request, it’s because they don’t want to accept the change at an emotional level. They are cloaking their reluctance in a veneer of intellectual superiority.
An actually neutral party would make an attempt to appreciate your point of view, then show you a path to their acceptance, and not continually challenge your request.
When you see this coming from some party, admit plainly (in private, if it helps them save face) that you have a philosophical disagreement with them, and ask them to engage honestly at that level. Do not play the game of attempting to satisfy their incessant demands. There is no end to them.