Aesthetics' is one of the scourges upon the world of art and design today and I can't talk enough how I hate how everything today is overly categorized and defined into gazillion labels with all its context and nuances taken out - and I don't see it to be different in its genesis from our obsession with 'gender identity' or 'neurodivergency' or how generation war are ramped up in the news today - these seem to be all symptoms of a larger cultural malaise that I couldn't put my hands on why, but partly I think it's because of social media and the way information spread today.
Aesthetics is thre parts: one, advertising. As in, smaller artist can use a label to tag themselves on social media and a potential audience will form around it. The same with people who repost things.
The second part is forming a small tribal group identity. You gave the example with Nu Metal genre fights, it's people giving an identity to something or saying "X is similar to Y" with a neat little package inside a bigger package. Either way, it's giving a structure to something and letting someone declare what they are and how it makes them (and or everyone who identifies with it) unique. You can look upon discarded art, music, culinary, and dance movements of the past and all see a similar pattern of a genre getting popular, then it splitting, then it splitting further into basically atomization, then the genre quiets down in popularity and the original genre plus a few subgenres are still used to this day. See
this website catagorizing electronic music alllll the way back in 1999-2001. There's likely books about genres of things written before their time about niche genres in genres but it would be harder to run across them if you're not searching for them or they went out of print because nobody gave a shit about how some art students in an obscure part of California called themselves a new niche genre of cubism. You can check out trans flag tumblrs to see what narrow personal label maybe 1-4 people used for a few years then grew up and never thought about again.
The third part is that nerds are
obsessed with categorizing things, and will argue until the cows come home and a while after, until they collapse from sleep exhaustion. We have useful niche catagories for things like chemicals that have different reactions based on form and very minor compositional differences as well as animals who cannot breed with each other or are a staple species in some way. Even then, arguments happen where someone is still screeching that one plant should be considered a subspecies and not an actual species because of these properties or characteristics, and others fighting back for the other person being wrong or because they are stuck on tradition. This also applies to hobbies and fandoms, where giant bitchfights will happen just because nerds fucking love categorization (maybe due to autism/ocd tendencies/a need to feel smarter by knowing more catagories and obscure terms) and will go balls deep on theories and jargon for no fucking reason other than they believe they're fucking right.
I'm trying to say that this is a problem in all fields, and internet has made it worse for a bit since categorization leads to a bigger audience, but like how many other genres folded into themselves so will the current genres. Some artist will evolve out of the genre naturally and decide to evolve their art further, some will continue until the next big movement pops up and switch to that, and some will just go with that one genre forever out of love. It's annoying but it's a cyclical process and we can see it better in real time since we can watch more artist post to social media, getting a better gage than just our town and the neighboring areas' artists.
Here's hoping the trans fad dies down until only the crazy are left and avoided like the plague they are.
