^Which would be fine if it didn't still simultaneously have a different meaning, leading people to confuse or conflate the two meanings and arrive at some gross misconceptions about how canon works -- like the idea that it's something imposed on both creators and audiences by some nebulously defined higher authority. The problem is that the word is used in multiple different ways at once and that obfuscates the issue.
It's no more obfuscatory than a mathematician referring to something as "normal" when they mean "perpendicular to", or "following a Gaussian distribution". Both situations cause initial problems in subculture/layman interactions, yes, but the solution is to code-switch, not to criticize the subculture for doing what language does all the time. This is how it always works.