This is an interesting (and lengthy) read. I disagree with some of the points and agree with others. The summary provides some interesting historical perspectives and commentary. I do concur that Liberalism has wandered away from its original intent of providing "a future that was secularizing, scientific, materially prosperous, progressive, universal and inevitable" while being mired in "diversity" and "identity" rather than collective human progress.
"Liberalism"... what's in a name? Through history, philosophies and behaviors have morphed to be the opposite of original, many times. "Liberalism" in today's context has NOT failed. In fact, it's likely to win out to become 100% in control and dominance in America. Unfortunately, "Liberalism" today is more of a synonym of "Communism".