saying-no questions are basically questions about how to set a boundary (i.e. how to set a boundary by saying no). But a boundaries tag already exists!
Could saying-no be made a synonym of boundaries? Or since there aren't any mods yet, could you just remove saying-no from questions and replace it with boundaries? And can we get some mods appointed? Like yesterday?
In response to comments from chat:
If a question is about saying no to a request that you do not want to honor (e.g. How can I say no to a friend who wants me to do something risky), then use [tag: boundaries].
If a question is about how to decline a request politely, use politeness.
If a question is about both, use both boundaries and politeness.
Don't use saying-no.