You and me both dude

And three makes a trio. It's been an interesting journey. I was super confused when the box character showed up and then the resolution started dropping to potato levels. I wonder how he's thought about this long journey.

This comment aged like wine

I've still doesn't understand where "close to positive" part was. Being mentioned in the same sentence as RLM?

learn to use apostrophes

I'm from the future and it's back now

Language is never wholly unified, but, if you wish to convey an intended meaning, you ultimately have to make sense to who ever you're talking to and either use words as they understand them or explain your definitions. Indeed, for genre people often have to explain their definition anyway because both parties have multiple definitions or at least don't know what the other party's definition is. I find it easiest to use either more specific terms (e.g. "hardcore-punk" to refer to bands like Minor Threat where I would have once just used "hardcore") or list off bands (e.g. Blink 182 and The Offspring to refer to one type of "pop punk", "The Story so Far" to refer to more modern stuff, or Pennywise to refer to another, and I guess proto-emo stuff like "Rufio" could even be another and actual early emo could be a sub-genre of pop-punk, though "screamo" is sometimes classified as emo, and most people wouldn't call that pop-punk. Pop punk is seriously my favourite example because it has so few sub-genres, spans such a wide range of sound and is such a mess haha) or songs similar to whatever I'm getting at. Using bands can obviously be troublesome because people think of different songs, periods, etc. The loss of meaning, consistency (including with old texts), and difficulty in communication can be annoying but there's not much you can do. If all else fails, you can always get creative/wax poetic, like people did almost constantly before there was a "Standard English"

If the use of a word accurately conveys the information then it is correct. However, in many cases differing usage/understandings of a word prevents information from being conveyed accurately which is how you can get "incorrect" usage. It is always a balancing act for permitting language to evolve while also preserving it's utility in for transmitting information efficiently.

"If the use of a word accurately conveys the information then it is correct." No offense, but that's a naive view of language. We do in fact use some words incorrectly a lot and can recover meaning via context, based on sentence pragmatics and conversational implicature. That's quite different from semantic meaning.