Cottagecore just sounds like one of those words in high school you created to be 'edgy' and 'different'. I abhor this word.
The term Cottagecore always reminds me of crunkcore, a gangsta rap screamo metal hybrid musical genre that was enjoyed in high school by people who were edgy. So I guess it fits.
In other news I checked Reddit today and my lord the level of "aesthetic" was immense.