No, but I would think that it is often useful to indicate when one does not know of a better option than the one one is criticizing.
Because "this is a bad choice" has a connotation that that is not the one that should be made, but that a different known one should be made instead, I think.
Of course, the indication can be implicit, or from context, etc.
And there might be exceptions, But I think this generally holds?