I’m probably just out of the loop, but what the hell is up with slapping “Punk” after some random word and trying to pass it off as a thing?

I know cyberpunk, I know steampunk, I know solarpunk, and those I can accept as “more than an aesthetic”, tho steampunk is mostly an aesthetic… but then you have for example frostpunk (a game I know nothing about), cypherpunk, silkpunk, etc. (I don’t really know how to find other bastardizations for examples, but I know I’ve come across other random nouns followed by “punk” and I find it super weird and confusing)

Is it just capitalizing on the cyberpunk/steampunk fad for naming, or do these other “punk” things actually have a legitimate claim of being punk? Is all this ___punk watering down the meaning or am I old man yells at cloud meme here?