You have some secret documents on R&D labs that you can say tech advancement stagnated?
You probably don't understand how big world really is, you probably don't understand how many different companies are there working on making stuff more efficient. All mobile phones looking the same for last 5 years is not "tech advancement stagnated".
There is also no single "world vision" and these "massive" geopolitical problems might be less of a problem then what media is presenting.
Deglobalisation and "less economic efficiency" seems like a good idea for me, first world people buying less crap built by exploited workforce from third world countries seems like a plus.
All that talk about "disconnecting" people for me is nonsense - people are connected more then ever I keep friends that I rarely see nowadays - but we are still good friends. Randos on the internet shouting at each other or teenagers playing MMOs instead of running in the woods is not convincing argument for me.
When I ride train - yes I read internet on my phone - yes I would never talk to strangers and never was even when I did not have internet on my phone, I would use Walkman to listen to tapes back when I was younger.
Problem with Walkman 20-25 years ago was that batteries were crap, headphones or earphones were crap and had cables that would break after month or two of using, nowadays I can listen music from my phone whole day and use earphones without any cables.