To the OP's question - no, I haven't noticed. But supposing what you say is true, I'm not sure what significance it has if some old punks have a "dim outlook." As far as I know, a lot of punks also had a "dim outlook" when they were young. Anger was part of what made the genre what it was. And there were reasons for it.
I grew up in '70s and '80s. All through my childhood and teen years, it was repeatedly hammered into me how great life had been for the previous generation. They had the best music, the best drugs, the best festivals. They were pushing for social change and actually achieving it. They had flower power, LSD, free love, peace not war. The Beatles, the Stones, the Who. Woodstock.
What did we have? Gas lines, Iran/Contra, disco, AIDs, inflation, heroine, pollution, a shrinking middle class, and deteriorating economy.
And while we struggled along, we were told, over and over, that there would be no resources left for us when we were older. The boomers were going to take the best of everything, own everything, break Social Security and leave us holding the bag... if they didn't kill us all with toxic waste and nuclear fallout first.
So yeah - we had a dim outlook. We were getting screwed and we knew it. That's where the rage came from.