I have the analogy in my mind that everyone at some point discovers their parents are flawed human beings. Other people realize the ideologies that they were taught as children are flawed.
Unfortunately, when teenagers realize this about their parents - they often make even worse decisions. Their parents are stupid, so everything they ever said is wrong - and then we suddenly have a teenage drug addict.
Similarly, a little boy may discover Santa Cause and Christmas miracles are a lie and as a result become Mr. Scrooge, giving everyone a hearty Bah Humbug during the Christmas season.
So yes, progressivism, hippies, counterculture, LSD and “Make Peace not War” were all necessary for a period of time when the US was carpet bombing naked children with Napalm for essentially no sensible reason except fear they would become Communist. America also had to come to terms with the Hypocrisy of “Liberty and Justice for all” - (except Asians, Blacks and Hispanics). And a whole stream of other skeletons in the collective closet.
Yes, there are more skeletons in that closet to be dug out. It’s still actually pretty full and we’ve only seen the ones that fell out when we opened the door. We have yet to actually go into that closet as a society or shine a light into it. Whenever anyone tries, the others turn away or try to cover the light. “How dare black basketball players take a knee and express their opinion in front of me! I paid good money for tickets and don’t want to see anyone’s opinion about racism.” - and similar.
The Liberalism of the 1960’s to 1990’s had a purpose that had to be addressed sooner or later. Some of it needs to now change direction, but some of it has only scratched the surface.
An example is cancel culture, which is a shadow of Green that the right has fully embraced many times more than the left ever did, but also adds physical violence to the methods used by cancel culture. Liberals get people cancelled for things that really actually don’t matter to society in the big scheme of things. Is anyone really harmed if a millionaire actor makes fewer millions because they didn’t get a role in some blockbuster movie about Mutant superheroes - or whatever? No. But is cancel culture healthy - also no, particularly when violence is added into the mix.