More or less, I agree with this part of the thesis.
> Western Europe has proven much better at responding intelligently to the limits of growth than the US has
This is kind of my point -- we don't do the things other countries do to respond because those things would broadly be perceived as improving the lot of most citizens, and Americans do not generally believe that is possible anymore. (Also: "socialism is bad!")
But there is no reason for a country where economic measures of growth of wealth and income are so consistently strong should be so hesitant to invest in the future, and should be actively disinvesting in long-term initiatives.
What's especially painful is that some of the same policy choices we make that result in more distress for citizens are also likely to reduce the long-run growth of the economy. We make choices that hurt us now and also make things worse in the future.
(Generally not going to respond to the political dig because this really isn't a direct outgrowth of the typical left/right political divide in the US or its projections on other countries. For example, right-leaning Hungary has universal healthcare and free college tuition, but nobody is accusing Hungary of being Leftist.)