It’s not a defense, just a note that you are moving the discussion to a different argument, as you are doing here again
In the general case I think it should be pretty clear if policy or action is being taken which either has a high level of public interest, or is not covered by previous election manifesto’s or beyond the normal remit of elected officials. Effective consultation (which is not the same as polling everyone) should be performed in these cases to make sure affected groups get fair consideration and their point of view and concerns are not over looked. Better engagement with the public could also result in more support for the final result, as well as less teething problems or outright mistakes.
However, running effective consultation is not easy and may take time, requiring different approaches in parallel to reach all groups. Hence this topic I guess.