The answer to Liberalism dying isn't more Liberalism. Liberalism is dying precisely because Liberalism is wrong or at minimum, unsustainable. The attitude of the writer is exactly like the fetishists of every dead ideology, in particular Libertarians who argue "Real capitalism hasn't been tried yet!" or Communists who argue "Real communism hasn't been tried yet." These people, Liberals (capital L) included, need to g…
That anti-liberalism was born out of liberalism doesn't make liberalism wrong. It's like saying all dinosaurs were birds because birds evolved from dinosaurs. It just doesn't follow that a weird offshoot now defines the entire group retroactively back in time. It makes no sense to think like this logically.
Failing to acknowledge the structural flaws of Liberalism just opens up an opportunity for ideological revolution. If the adherents of Liberalism prefer moderation, they better had start acknowledging how it's failing people. "Just Liberal harder" won't work forever.