Agreed, I think there was a point, when we could still benefit from the pre-existing social trust network, that it was a net positive. Now that the pre-internet trust network has deteriorated, and with no trust mechanism built into the internet, it is rapidly devolving toward a net negative for social stability.
I think relying on the internet to have a trust mechanism built in is a bit like relying on our road-builders to ensure our vehicles are safe.
While the average internet user will just trust the sites and apps they use, there's nothing stopping those who are able from designing/building/using/sharing technology which they can reasonably trust. The building blocks are there (crypto / networking libraries etc.).
When open source software gets outlawed, I'll be worried.