I don't see how that is the point I made. The point I made was that an argument should be given as to whether a feature should be in the language or not.

Note that this leaves the possibility that a feature should not be in the language, even if it does solve a real problem.

Both arguments do not address whether the language should have a feature or not.

"Not essential" might be recast as a valid argument, but must be rephrased in terms of cost vs benefits of the feature examined wrt the goals of the language.