Normative is just the adjective form of "related to norm" - can still be perfectly descriptive in use. The difference you allude do is more about the practical enforcement of a norm (or lack thereof), than the kind of the part of speech use to refer to it.
I 100% understand and empathize, doesn't mean I agree.
> Normative is just the adjective form of "related to norm"
You might want to recheck the definition of normative. Yours is a non-standard usage and you will be misunderstood if you continue to use it that way.
Norm is is, Normative is ought.
> Normative: pertaining to giving directives or rules
> Synonyms: prescriptive