I don't want to sound like a contrarian, because, I sort of agree. Or, rather, I would like to be able to agree.
Perhaps presumptuous, but I don't think wisdom goes together with either inaction, complacency, or otherwise willful ignorance. Which, seems to be the gist of the replies my previous comment received.
I still think that not worrying/complaining about things we cannot control or affect holds true for many things, and many aspects. However, I disagree with the premise. We can all do something, some more than others.
I've categorically refused jobs in the oil and gas sector, and increasingly become picky about what to devote my professional life to. I very consciously try not to be a consumerist, though I'm probably in the global top 10%, given statistics for my country. I eat meat, even though it doesn't help. I have traveled the world for my own amusement, though I've come to see it as an absolutely ridiculous thing to have done.
I could definitely do more. I could actively devote my life to it. I could decide not to have kids. Etc.
Is it wisdom to ignore these problems? Or to find happiness as a state of mind, in spite of it? I would assume it's the latter. I just don't know if wisdom is the right word for it. But maybe it is.