It reminds me of the "-gate" suffix denoting scandal, originally derived from the name of the Watergate Hotel, his B&E crew's actions at which ultimately brought Richard Nixon low.

Wiktionary [1] describes the "-core" suffix as a similar backformation from the musical genre name "hardcore", and as with "-gate", it seems to have developed into a general-purpose inflection denoting a genre or subculture - to the extent, I suppose, that those two concepts can any longer be distinguished from one another, at least.

[1] https://en.m.wiktionary.org/wiki/-core