I always think of my grandparents in these discussions. They had an enormously active civic life their entire lives- quite literally, my grandfather passed away at a church lecture. They helped build institutions like an anti-smoking organization, their church, or the local arts organization- not necessarily as leaders, but as the people who made things happen.
Boomers, Xers, and millenials... don't seem to do this. It's pretty well documented (see Bowling Alone).
I'm with the author here- our the ability to organize has been greatly diminished even as our ability to communicate has gone up. There are probably many reasons why- entertainment is far more plentiful and an alternative to civic engagement, maybe our existing institutions really are that good, the trained responses the author discuss. Whatever it is, I think it is a shame- participating in civic society is one the great joys in life, and I agree that the lack of participation saps something of the United States culture and success.
That being said, civic society doesn't operate in isolation. It tends to interact with government extensively, but it can lend legitimacy and guidance to government actions. You can see this at work with the government responses to the BLM movement- one of the great civic society triumphs of recent times, although a very different one then the author talks about.
Pandemic response is extremely within the wheelhouse of government.
NAACP also pushed government most of the time - the registering for vote, push to make school desegregation actually happen, letter writing about various criminal causes. They were not trying to do it without government, they were trying to make government do the right thing.
There's absolutely no evidence for the theory that we as a society aren't socially active any more. There is evidence of a split in society.
I link it to the strong trend of anti-authoritarianism and individualism that started to become current in the 50s & 60s. Today it manifests in the ancap and anarcho-communist ideologies most extremely, but it also manifests everywhere as trust breaks down and a general unwillingness to move in concert with others at a large scale is present.
I do believe that we as a society are currently trying to decide if we want to build something communal, or if we want to commit to extreme selfishness. It'd be more fun to read about it in a history book, but it sure is interesting.
The vast distributed efforts by citizens to produce PPE that the government seemed incapable or unwilling to acquire seems to hint at some serious dysfunction.