Why Doesn't Alt Culture Exist?

Coilhouse asks why doesn't alt culture exist?

... perhaps anachronesis is not the retardant of a burgeoning alt culture, but its catalyst. After all, every subculture has always been a mediated response to the mainstream: punk culture’s rebellion grew out of a disillusionment with the rewards promised by white-collar mobility; Rastafarianism was a subversion of the white man’s religion; both the riot grrls of the 90s and the flappers of the 20s adopted certain styles to reject - or reclaim – certain conventions of womanhood. What, then, is the mainstream culture that today’s alt puts under the microscope?