[1]Except in the rarest of occasions. edit: they also serve as a means to pretend and extort, too, but that's besides the point.
I'm at a complete loss as to why you would write that, to me this is like reading "Politicians don't have any role in defining laws" or something - like, we must be using some completely different definitions for you to write that, it's not even disagreement, I clearly have no idea what you have in mind.
Does your definition of value match this (second definition): https://www.google.com/search?q=define+value
like, I literally don't understand why you would write that unless we're just really misreading each other due to wildly different definitions of what you're talking about. If your definition of value doesn't match the above, then what definition are you using?
It's true a lot of people think and live like this, but it would be interesting to see politics join the 21st century, instead of pretending that an ethical base that can be traced back to the Stone Age is something to celebrate.
https://en.wikipedia.org/wiki/Realpolitik
There is no other way in politics. Never has been, never will be.