No, I do not wish to assign that meaning, that meaning was already assigned a long time ago. And you don't need to be a prescriptivist to want a language that is capable of communicating our thoughts with each other.
Haha, no, it's not a pejorative. It's literally one of two schools of thought: descriptivism vs. prescriptivism. What you're describing is prescriptivism.
I didn't suggest it was pejorative, and I know what it is. There are not two school of thought, that's a false dichotomy. That is like saying "there are two schools of thought, catholic and protestant". You can want to prevent the decline of language without insisting on trying to bring back already lost definitions like a prescriptivist.